ベンカン機工 List of Products and Services

A non-standard angle elbow refers to elbows with intermediate angles other than the typical 90° or 45°. In piping design, by manufacturing special intermediate angle elbows such as 85.5°, 37°, or 135°, it becomes possible to accommodate piping that cannot be managed with standard 90° or 45° elbows, allowing for installation in spaces that standard elbows cannot fit into. We can manufacture elbows at the angles requested by our customers and also propose products that can address your specific challenges. Please feel free to consult with us.

"High-strength steel" is a type of steel material that has higher tensile strength and strength compared to general materials. Due to its properties, it allows for thinner wall designs in piping, enabling smaller diameters and reduced weight. This makes it a widely used joint material in various fields, including oil and gas pipelines. For some materials, we have stock of the steel pipes, allowing us to deliver relatively quickly, which has been well received by our customers. <Representative steel grades> API5L-X42(L290), X52(L360), X60(L415), X65(L450), corresponding to PSL1 and PSL2 classes. A860 WPHY42, A860 WPHY52, A860 WPHY60, A860 WPHY65, MSS SP-75 WPHY42, MSS-SP75 WPHY52, MSS-SP75 WPHY60, MSS SP-75 WPHY65.

At Benkan Kiko, we have a wealth of experience in metal plastic processing technology, allowing us to manufacture joints made from nickel-based alloys, which are difficult to shape, and we have many achievements in this area. Nickel-based alloys are used as heat-resistant and corrosion-resistant materials, and due to their high strength, they are also suitable for use in high-temperature environments. The nickel-based alloy joints that can be manufactured at Benkan Kiko include the following steel grades: ASME UNS NO N10276, N06022, N10655, N06210, N02200, N02201, N06625, N08020, N06002, N06601, N06230, N08800, N08810, N06600, N08825, N06690.

Butt-welded pipe fittings are designed to permanently join piping by welding them together. The "BENKAN" brand, including BENKANKIKOH, is recognized globally as synonymous with welded pipe fittings, and we have absolute confidence in the quality that underpins this reliability. They are intended for general piping use with a temperature range of approximately 0 to 350°C and a pressure of about 1 MPa.

Alloy steel fittings for piping contain elements such as Cr (chromium) and Mo (molybdenum), and are primarily used for main piping and reheating piping in boilers, biomass power generation, thermal power generation, as well as high-temperature and high-pressure piping in petroleum refining and chemical industries. Benkan Kiko has a proven track record in the manufacturing of various alloy steel fittings. Additionally, for some materials, we have stock of the steel pipes required, allowing us to deliver relatively quickly. Achieving a carbon-neutral society necessitates reducing CO2 emissions through increased efficiency in plants. Low-alloy steel and high-chromium steel pipe fittings that can withstand harsh high-temperature process environments have become essential products under such conditions. Furthermore, Benkan Kiko is also contributing to society by exploring the manufacturing of special specifications and new materials. <Representative Steel Grades> (JIS Standards) PA12, PA22, PA23, PA24, PA25, PA26 (Thermal Power Standard Materials) Fire STPA28, Fire STPA24J1, Fire STPA29 (ASME/ASTM) A234WP1, WP12, WP11, WP22, WP5, WP9, WP91, WP92

The main product of Benkan Kiko is the [butt-welded pipe fitting], which comes in a wide variety of types depending on the piping application, including differences in material, diameter, wall thickness, shape, and surface treatment. Typically, the manufacturing method for [butt-welded pipe fittings] involves plastic processing. Plastic processing refers to the method of shaping materials (steel pipes and plates) by applying a large force to deform them into the desired shape. Benkan Kiko's strength lies in this plastic processing technology. However, in plant-related piping, there are special specifications such as steel types and shapes that cannot be accommodated by plastic processing due to specific needs. In such cases, we consider the [forged steel welded pipe fitting]. The forged products we will introduce this time are primarily used in plant-related applications. The manufacturing process involves forging, heat treatment, and then complete machining. Forged steel refers to materials that have been subjected to a specified forging ratio applied to steel blocks (ingots) of various steel types. The [forged steel welded pipe fitting] is a product that has been precisely machined into shape. At Benkan Kiko, we can offer a wide range of proposals for [forged steel welded pipe fittings] that accommodate various special specifications and steel types.

At Benkan Kiko, we provide high-quality products by manufacturing them using our long-developed welding technology and quality assurance system, assisting our customers in achieving cost reductions in their plant piping design. The product we are introducing this time is a super large diameter welded pipe fitting exceeding 48 inches (1200A).

Butt-welded pipe fittings are designed to permanently join piping by welding them together. The "BENKAN" brand is recognized globally as synonymous with welded pipe fittings, and we have absolute confidence in the quality that underpins its reliability. These are seamless pipe fittings made from materials that can be used at high temperatures, low temperatures, and high pressures.

Benkang Kiko's welded pipe fittings inherit the technological expertise cultivated by Nippon Benkan Kogyo, established in 1947, and Nittetsu Sumitomo Kiko, which has been manufacturing since 1953. They are capable of handling various materials, including not only carbon steel but also stainless steel, alloy steel, and non-ferrous metals, as well as a wide range of diameters from 1/2 to 80 inches, allowing them to adapt to various piping environments (design and usage conditions). Additionally, they have obtained various certifications necessary for production, such as JIS and ISO 9001, and have a robust technical and quality assurance system to support these certifications.

Butt-welded pipe fittings are designed to permanently join piping by welding them together. The "BENKAN" brand is recognized worldwide as synonymous with welded pipe fittings, and we have absolute confidence in the quality that underpins its reliability. The surface is coated with zinc plating.

In the variety of welded pipe fittings, elbows, Ts, and reducers are common, but fittings that have branches on the top and bottom resembling a T are referred to as crosses due to their cross-shaped design. This type of pipe fitting is not specified in JIS standards and is mostly manufactured by machining from forged materials. However, Benkan Kiko is capable of producing them using the bulging method (hydraulic forming) from seamless pipes. The machining method tends to result in heavier weights and often produces angular shapes, which can make welding at construction sites difficult. Additionally, the method of machining from a solid block requires a significant amount of material, leading to higher material costs and increased processing costs. Manufacturing through shaping from seamless pipes allows for smooth shapes, uniform wall thickness, and lighter product weights, while also achieving cost reductions. This cost advantage becomes more pronounced with high-cost materials such as stainless steel and non-ferrous metals like nickel, resulting in significant benefits. For more details, please feel free to consult our sales office.

Our "Welded Pipe Fittings" are manufactured in JIS-certified and ISO9001-certified factories, and are actively used in a wide range of fields from infrastructure to civilian applications, including thermal power generation, geothermal power generation, oil refining, city gas, waste incineration plants, water purification plants, construction, pharmaceutical plants, shipbuilding, papermaking, and nuclear power generation. Using the metal plastic processing technology and welding technology we have cultivated over many years, along with our quality assurance system, we provide high-quality products and assist with piping design and cost reduction. ★ We are currently offering a "Comprehensive Catalog with Dimension Tables" that includes a rich lineup of welded pipe fittings for download! [Contents of the Comprehensive Catalog (partial)] ◎ Types of welded pipe fittings ◎ Dimensional tolerances for welded pipe fittings ◎ Dimension tables for welded pipe fittings Elbows (long, short / large diameter elbows (long, short) T (same diameter, different diameter) / large diameter T (same diameter, different diameter) Reducers (concentric, eccentric) / large diameter reducers (concentric, eccentric) Caps / stub ends (lap joints)

We have the technical capabilities and experience to accommodate various ship classifications, and we respond not only to the specifications required by classification societies but also to a wide range of additional requests tailored to our customers' needs.

Su (Esu Yuu) pipe fittings are thin-walled stainless steel butt-welded pipe fittings (JIS B 2309) that have been reduced in thickness to a level suitable for general piping stainless steel pipes (JIS G 3448 TPD). This thinning has achieved a reduction in the weight of the piping and a decrease in costs, which has led to a reduction in on-site construction burdens and has received positive feedback. The material used is often [SUS304WD] since it is for general piping, but in special environments such as buried corrosion resistance, [SUS316WD] may be used. Our company can accommodate both options. The maximum specification pressure is 2.0 MPa.

Clad steel refers to a composite material that uses carbon steel, high-strength steel, low-alloy steel, etc., as the base material, and combines it with a different type of steel on one side through processes such as hot rolling (bonding), welding, or explosive bonding. By enabling the joining of dissimilar metals, it can create functions that cannot be achieved with a single type of metal. By combining materials with good corrosion resistance or by using less expensive metals in combination with more expensive ones, it is also possible to reduce the overall cost of piping. This type of steel offers advantages in various cases, such as accommodating rare materials or materials that can only be purchased in thin sheets. *The photo shows a cross-section of clad steel, where the combination of dissimilar metals can be seen.

Large-diameter welded pipe fittings are typically manufactured from carbon steel plates, alloy steel plates, and stainless steel plates, each from their respective materials. What we are introducing this time is a T (tee) welded pipe fitting made from a plate of WPHY60 steel with a thin steel plate of UNS8825 bonded to the inside. In addition to general carbon steel and stainless steel, it is possible to manufacture from a variety of materials, including low alloy steel, high alloy steel, duplex stainless steel, super stainless steel, aluminum, nickel, and high-strength steel. Among these diverse materials, it is also possible to manufacture from clad steel plates, which combine two types of materials. Furthermore, production from seamless materials or overlay (build-up) materials that are not steel plates is also possible.

At the construction site of a plant where piping is installed, welding of pipe fittings to pipes and welding of pipe fittings to pipe fittings often must be carried out using approved welding methods (welding construction methods) based on regulations such as the Gas Business Act. Since there are many types of welding construction methods depending on the material of the pipes and the welding method, it is not always possible to accommodate all sites. Therefore, by pre-welding short pipes at Benkan Kiko, it becomes possible to align with the welding construction methods that can be used on-site. Benkan Kiko has obtained many welding construction methods based on regulatory requirements such as the Gas Business Act and the Electric Utility Act, allowing us to respond to various cases. Additionally, we can accommodate various shapes for guide bar installation according to customer requests, and we also offer the option to purchase materials for guide bars and sleeves from our company. We are qualified to conduct various tests and inspections on the welded joints of sleeves and guide bars, so please feel free to contact us.

"Non-ferrous metals" refer to metals that are different from "carbon steel," "alloy steel," and "stainless steel," including types such as "aluminum alloys" and "nickel alloys." At Benkan Kiko, we manufacture welded pipe fittings using "non-ferrous metals," which are difficult to control in shaping, thanks to our long-established metal plastic processing technology, and we have a wealth of delivery achievements. Additionally, by utilizing various material purchasing sources we have developed over the years, we are equipped to support our customers' piping designs by accommodating a wide variety of steel types. We can also handle many other materials, including "Inconel," "Hastelloy," and "Monel," so please contact us for more details. We also introduce "non-ferrous metals" on the Benkan Kiko blog, so please take a look.

Please use Benkan Kiko's aluminum alloy butt-welded pipe fittings around the tanks for LNG carriers. Benkan Kiko has obtained qualifications from many classification societies and can manufacture elbows, tees, reducers, caps, as well as sleeves and bell mouths through a combination of plastic processing and welding. We are compliant with the following classification societies: 1. Nippon Kaiji Kyokai (NK) 2. Bureau Veritas (BV) 3. Lloyd's Register (LR) 4. American Bureau of Shipping (ABS)

The river water around the Yonago River No. 1 Power Plant in Suzaka City, Nagano Prefecture, has a strong acidity with a pH of 3.23, making it unsuitable for agricultural use and as a habitat for fish. However, in order to effectively utilize resources and contribute to the community while ensuring environmental conservation through profit return, the establishment of a hydroelectric power plant was initiated. In this context, we were approached through the Ipros site, and we had the opportunity to visit the site. We had detailed discussions to propose products that our company could assist with. As a result, we were evaluated positively for our extensive delivery track record to power plants, quality and inspection systems, and our ability to create documentation, leading to our adoption. The welded pipe fittings we supplied this time are made of stainless steel, model 90-45EL, material SUS304W, sizes 600A and 400A, with a thickness of S10S. We believe that stainless steel, which is highly resistant to corrosion, is essential for the river water with strong acidity used in hydroelectric power plants. In this way, Benkan Kiko's welded pipe fittings are used in various places.

■ White gas pipes for air conditioning equipment (FSGP coated products) ■ For cooling water piping ■ Stainless steel pipes for return lines in steam piping ■ Black gas pipes for steam and oil piping (FSGP products) Among others, we offer a wide range of welded pipe fittings in all these materials, with various sizes and wall thicknesses available in stock. They are used in large buildings, commercial facilities, hotels, factories, and other central air conditioning systems. Please feel free to contact us for estimates or inquiries.

At Benkan Kiko, we also sell fitting products that are not listed in our catalog. The image shows a special fitting called a "cross" for welded pipe joints. For more details... please feel free to contact us!

At Benkan Kiko, we also sell joint products that are not listed in the catalog. The image shows a special-shaped joint called a "Y-piece" for welded pipe joints. Its applications include use in boilers, heating furnaces, boiler tubes, and piping for heat recovery.

At Benkan Kiko, we provide high-quality products in response to our customers' requests, including butt-welded pipe fittings, the manufacturing of welded steel pipes, and piping prefabrication, thanks to our long-established management system in piping products (materials, welding, manufacturing processes, and quality assurance). ■ Welded Steel Pipes 　➢ Manufacturing Range 　　・Diameter: 400A (16B) to 1200A (48B) 　　・Wall Thickness: Up to 90mm 　　・Length: Short pipes up to 8,000mm (8000L) 　➢ Recommended Points 　　・No lot restrictions; we can manufacture from a single piece. 　　・Short pipes and random lengths can be produced. 　　・We can accommodate specified bevel shapes and special tolerances (prior consultation required). ■ Piping Prefabrication 　➢ Spoolable Range 　　・Spool Dimensions: 9000(w) x 2350(d) x 2000(h) 　➢ Recommended Points 　　・We offer centralized management through a single point of contact for welded steel pipes, pipe fittings, and piping prefabrication. 　　・The same construction method ensures consistent quality of the welds.

When inquiring about welded pipe fittings, the following information 1-6 is required: 1. Standards: JIS, ASME, etc. 2. Shape: Elbow... Angle (45 degrees, 90 degrees) Bend radius (long, short) Tee... T(S) = same diameter, T(R) = different diameter Reducer... R(C) = concentric, R(E) = eccentric Cap... CAP Lap joint... LJ (5K, 10K, 20K) 3. Material: SGP, PT370, SUS304W, etc. 4. Diameter: A designation... 25A or B designation... 1B, etc. 5. Thickness: S10S, S20S, S40, etc. 6. Whether there are regulatory requirements or additional specifications (if necessary) *Examples of combinations for 1-5: Example 1: 1. JIS 2. 90EL 3. SUS304W 4. 3B 5. S10S Example 2: 1. JIS 2. T(R) 3. PT370 4. 80AX50A 5. S40 If you provide your inquiry as above, we can respond smoothly. Regarding point 6, it may apply to customers in the electric, gas, or high-pressure gas sectors.

The product we would like to introduce this time is the NBG joint, which has undergone cutting processing with zinc plating. When performing the peeling work of the zinc plating attached to the bevel area, conducting welding while leaving some plating can lead to the generation of harmful substances due to the thermal effects during welding. Therefore, there is a concern about the generation of harmful substances, and the peeling work creates a burden and hassle on-site. The NBG joint is a welded pipe joint from which the zinc plating attached to the bevel area has already been removed through cutting processing. As a result, it eliminates the process of peeling the plating before performing the surrounding welding work, removes concerns during the surrounding welding, and improves work efficiency. The NBG joint is mainly used in air conditioning equipment that creates a comfortable living environment and is active in various fields such as large building facilities and commercial establishments. Please consider the NBG joint, which can eliminate the peeling process and reduce concerns about harmful substance generation as well as the burden and hassle of peeling work. NBG stands for "Non Bevel Galvanized," which is a unique expression of Benkan Kiko.

Bulge forming (hydroforming) is a method of processing materials by applying high internal pressure and axial load (axial pushing) to tubular materials (such as steel pipes) placed within a mold, deforming them into shapes that conform to the mold. It is a type of plastic processing using various alloy steel pipes, including carbon steel, stainless steel, aluminum, copper, and brass. Using bulge forming offers the following advantages: 1. It allows for integral forming, making complex shapes possible. This improves the rigidity of the processed products and leads to enhanced quality. 2. It enables material thickening forming, allowing for right-angle bends in steel pipes, which can reduce processing time and increase processing speed. Thus, it is a forming method that not only allows for complex shapes but also enables cost reduction. Our company is capable of manufacturing welded pipe fittings, including T (tee), special T (tee) at 45° YT, crosses, laterals, and more. We also accept inquiries for welded pipe fittings tailored to customer needs in terms of material, diameter, and thickness, as well as for the production of special items, so please feel free to contact us.

We received an order for products for the replacement work of elbows with longitudinal weld seams, which we delivered for the after-service project for the thermal power plant of Mitsubishi Heavy Industries, Nagasaki Factory. This project involved the on-site replacement of aging piping used under high temperature and high pressure conditions. Instead of the same elbows supplied previously, we provided a new product that incorporates many advantages, which was well received. The specifications of the product that were appreciated are as follows: - Seamless elbows to eliminate longitudinal weld seams. - To reduce the workload within the engineering manufacturer, a water pressure test was conducted at Benkan Kiko at a pressure of 1.3 times the design pressure. - Suspension brackets were installed to facilitate easy replacement work on-site. By conducting the water pressure test at 1.3 times the design pressure in advance at Benkan Kiko, we can avoid the risk of performing a water pressure test at 1.3 times the design pressure on aging piping. We have confirmed and experienced effects such as delivery management and workload reduction, and we have received high evaluations, including subsequent orders for after-service projects under the same scheme.

What is the RoHS Directive? The RoHS (Restriction of Hazardous Substances, commonly known as RoHS) Directive is a directive enacted by the European Union (EU) in July 2006 that restricts the use of certain hazardous substances in electrical and electronic equipment. The RoHS Directive aims to ensure that electrical and electronic equipment does not contain hazardous substances, primarily to facilitate recycling under the WEEE Directive and to prevent harm to humans and the environment when such equipment is disposed of through landfill or incineration. Based on the official gazette published in June 2015, it has been decided that, starting from July 2019, four new types of phthalate esters will be added as restricted substances. *The WEEE (Waste Electrical and Electronic Equipment, commonly known as WEEE) Directive is a directive by the European Union (EU) concerning waste electrical and electronic products.

The Y-pipe in the photo has a size of 4B, with a 30° (R300) elbow welded to the back side of a 1B short pipe, resulting in a special shape. Since SUS430 is in sheet form, both the elbow and the short pipe are manufactured by forming pipes from sheets. After shaping, the inner surface is polished to achieve a very smooth finish. Type: Special Y-pipe Dimensions: 4B x 1B Wall thickness: 3.0T Material: SUS430 This product is used in metal powder processing equipment and has received high praise from customers. In addition to the above, we are engaged in the production of various types and shapes of products, with many successful deliveries. "If only we could make such a joint!" or "It would be great to have such a joint." If you have such thoughts, please feel free to consult with us.

At Benkan Kiko, we own various testing machines for mechanical tests, including tensile testing machines, bending testing machines, impact testing machines, and hardness testing machines. Our manufacturing plants, Kiryu Plant and Osaka Plant, are equipped to conduct mechanical tests, allowing us to perform product manufacturing and associated mechanical tests within the same facility, thereby achieving high-quality product management and reducing lead times. Additionally, we conduct strict calibration of measuring instruments and manage calibration documents under traceability linked to national standards, so you can trust us with your needs. Mechanical tests can also be conducted in the presence of customers. Please feel free to contact us for more details. We take great pride in our "monozukuri" (manufacturing) and have received high praise for providing high-quality products to our customers. Eastern Japan Sales Division: 03-3777-1521 Western Japan Sales Division: 06-6482-1851

The core logistics center is located close to various transportation company terminals, providing excellent transportation efficiency. We have inventory items including carbon and stainless steel welded pipe fittings and stainless steel flanges as listed below. 【Inventory Items】 - Elbows (long and short) - Tees (same diameter and different diameter) - Reducers (concentric and eccentric), etc. - Stainless steel flanges 【Materials and Types】 - FSGP (black pipe and white pipe) - PT370 (S40, S80, S160) - SUS304, 316, 316L, etc. - SOP-FF/RF - BL-FF/RF, etc.

Our company utilizes a 30-ton large batch furnace (4000W x 2700H x 11000L) as the main equipment for heat treatment, and we carry out various heat treatments according to customer requests, conditions, and product sizes. The types of heat treatment we can perform include "Normalization: Annealing," "SR: Stress Relief Annealing," "Quenching: Hardening," "Tempering: Tempering," or combinations of these treatments. (Quenching for large products requires consultation.) For more details, we can offer various considerations and proposals based on customer requests and conditions, so please feel free to contact us.

The name "Monaka" originates from a type of Japanese confectionery called "monaka," which consists of two layers stacked together. 1. Enhanced facilities enable the production of products tailored to your needs When manufacturing large-diameter elbows, a method may be employed that combines steel pipes known as "maita bends" and "ebi pipes" to create elbow shapes. The monaka manufacturing process requires molds and high-output press machines. Our facilities are well-equipped, allowing us to produce products that meet our customers' requirements. 2. Fewer weld seams reduce the risk of welding defects Due to the manufacturing method of combining steel pipes through welding, maita bends tend to have many weld seams, resulting in more inspections. Our elbows have only two weld seams in the longitudinal direction, significantly fewer than maita bends, thereby reducing the need for inspections on weld seams and minimizing the quality risks associated with welding, allowing for safer usage. 3. Smooth shape minimizes the impact on fluids Maita bends have a cornered shape due to the combination of steel pipes, while our formed elbows have a smooth R shape, which minimizes the impact on fluids. We can accommodate various materials (for details, please refer to the section below), so please feel free to contact us.

A tapered pipe is a piping product manufactured from steel plates, featuring a gradient and longitudinal weld seam, and refers to any product other than a reducer in the standards for welded pipe fittings. While reducers have specifications for product height (length) and step-down (the difference in diameters of the connecting pipes), there may be instances during piping installation where products with different heights or step-downs from the standards are required. In such cases, tapered pipes can be utilized. Short pipes can also be supplied with the necessary length and end processing for short steel pipe components required in piping design. These products contribute to reducing construction time and improving on-site construction efficiency for our customers. Please consult us regarding diameter, plate thickness (product thickness), length, etc. Additionally, materials can be manufactured from carbon steel, high-strength steel, alloy steel, stainless steel, and non-ferrous metals such as aluminum. Both tapered pipes and short pipes can be ordered from a single small lot. Tapered pipes can accommodate both concentric and eccentric designs. In addition to piping applications, how about considering them for steel structures or welded structures? We can provide various proposals based on your requests and conditions, so please feel free to contact us for more details.

At Benkan Kiko, we manufacture various types of steel header pipes, which are a kind of prefabricated product. 1. Diameter, plate thickness (product thickness), length, etc. We can consider and propose various options. Please consult with us first. 2. Material We can manufacture using carbon steel, high-strength steel, alloy steel, stainless steel, as well as non-ferrous metals like aluminum. 3. Various tests as needed Non-destructive testing... RT (radiographic testing), PT (penetrant testing), MT (magnetic particle testing), UT (ultrasonic testing), etc. Mechanical testing... tensile testing, bending testing, etc. 4. Wide-ranging support for material procurement Utilizing a wealth of sourcing options, we can procure materials in-house, allowing you to trust us with your needs. [Product Examples] - A main pipe with multiple outlet pipes attached for piping systems. - Branch pipes attached to R-shaped sections like elbows, etc.

Polishing is effective in enhancing the aesthetic quality of metal surfaces and refining surface roughness by applying a polishing treatment to the product. Finishing is mainly done through buff polishing, and regarding the finishing roughness grades, options such as #200, #300, #400, and #600 are available, allowing for treatment of the inner surface, outer surface, and both surfaces of pipe fittings. The types include elbows, tees, reducers, caps, and stub ends, with materials primarily including SUS304, SUS304L, SUS316, and SUS316L. We accept orders starting from a single small lot. For more details, we can provide various considerations and proposals based on your requests and conditions, so please feel free to contact us first.

Our Osaka Factory in the Fusso area (Fusso-cho, Amagasaki City, Hyogo Prefecture) serves as a production base and holds inventory of welded pipe fittings to deliver products to customers in the western Japan area (Kinki region, Chugoku region, Shikoku region, Kyushu region) with short lead times. 【Stock Items】 - Elbows (Long and Short) - Tees (Same Diameter and Different Diameter) - Reducers (Concentric and Eccentric), etc. - Stainless Steel Flanges 【Materials and Types】 - FSGP (Black Pipe and Coated) - PT370 (S40, S80, S160) - SUS304, SUS316, SUS316L - Stainless Steel Seamless, etc. - SOP-FF/RF - BL-FF/RF *Please inquire separately regarding the sizes and lineup of stock items. We have a rich inventory, and to further increase our stock product lineup, we have established new racks. We plan to add more racks in the future to provide even more abundant inventory support. Additionally, we have regular delivery services, allowing for timely delivery of heavy items to nearby areas. *Within the delivery area. We also offer next-day shipping to the Kinki, Chugoku, Shikoku, and Kyushu areas, so please feel free to contact us. *For distant areas, delivery will be the day after next.

Super 9Cr is a material that is difficult to handle even among alloy steels, but we have received this order as a leading company in the manufacturing of alloy steel pipe fittings with a proven track record worldwide. We can also accommodate the specifications of "small diameter and thick wall," which are challenging for plastic processing, so please feel free to contact us. We look forward to inquiries about what we can do! We will also consider manufacturing in the shape requested by the customer.

At Benkan Kiko, we utilize our know-how and technical expertise related to special steel to manufacture and deliver welded pipe fittings according to our customers' requests. This time, we would like to introduce an example of a duplex stainless steel elbow, which has high corrosion resistance, high strength, and good weldability, delivered for piping installation of an exhaust gas cleaning system. The exhaust gas cleaning system (hereinafter referred to as "scrubber") is a device that cleans and releases generated particulate matter and harmful gases, and special steel is often used in the piping for this scrubber installation. Application: Piping for exhaust gas cleaning system (scrubber) Material: UNS S32750 Delivery size: 1-1/2B (40A) to 14B (350A) This time, all products were manufactured as welded assembly types from steel plates. At Benkan Kiko, we are also capable of manufacturing from other special materials such as super stainless steel and aluminum, and we can produce large diameters ranging from 16B (400A) to 48B (1200A), as well as welded pipe fittings exceeding 1200A. We are actively responsive to inquiries regarding the manufacturing of welded pipe fittings made from special steel and special dimensions, so please feel free to consult with us.

At Benkan Kiko, in addition to butt-welded pipe fittings, we also manufacture arc-welded steel pipes made of steel plates. There are no lot restrictions, and we can accommodate manufacturing in random lengths (any length specified by the customer). We can produce the desired number and length as requested by the customer, such as "I only need one 500L on-site." Additionally, we can also handle bevel processing (grooving) on both ends or one end, which may be difficult to do on-site, according to the bevel shape specified by the customer. By manufacturing in the specified shape, immediate piping installation after delivery becomes possible, and we have received positive feedback from our customers. 【Manufacturing Range】 - Diameter: 400A (16B) to 1200A (48B) - Wall thickness: up to 90mm (MAX.) - Length: from short pipes to 8,000mm (8000L) *For sizes other than those listed above, please inquire.

Seamless stainless steel pipe fittings are used in many fields requiring corrosion resistance, ranging from low to high temperature and high-pressure piping. As the name suggests, seamless pipe fittings are made from pipe without seams, which minimizes the risk of corrosion at the longitudinal welds and makes them suitable for critical piping specifications. Our company stocks elbows up to 12B and tee reducers up to 8B, ensuring we can respond to urgent requests with immediate delivery. Additionally, for products larger than the aforementioned sizes, we have the capability to manufacture a wide variety of products in terms of types and materials to accommodate various customer piping designs. For example... "I need just one seamless elbow by tomorrow; can you help with that?" "This is a bit of a special material for stainless piping; can you accommodate the fittings?" "Can you manufacture fittings with special shapes?" If you have any concerns, please feel free to consult with us. For more information on our manufacturing capabilities, please visit our website. http://benkankikoh.com/weldfit/w-disposal/w-disposal-index.html

A tapered pipe refers to a piping product where the cross-sectional area differs between the inlet and outlet. There are similar products called reducers, but the length and step of reducers are determined by standards. However, in piping construction, there may be cases where products with lengths or steps that differ from the standards are required. In such cases, tapered pipes can be utilized. Additionally, while there is a manufacturing method that involves machining steel materials, for large-diameter products, considering material and processing costs, tapered pipes manufactured by welding steel plates have cost advantages. At Benkan Kiko, we can manufacture from a single piece in small lots, and we will produce according to customer requests and various conditions regarding diameter, plate thickness, wall thickness, length, etc. Furthermore, we can manufacture using materials such as carbon steel, high-strength steel, alloy steel, stainless steel, and non-ferrous metals like aluminum. For more details, please feel free to contact us.

There are pipe fittings manufactured using materials certified by classification societies, referred to as "classed products." These fittings are made from materials that meet the standards set by the classification societies, which are generally difficult to obtain. However, at Benkan Kiko, we leverage our extensive experience and material sourcing capabilities to provide stable supply support for our customers' design, procurement, and production needs. We can accommodate carbon steel, low-temperature steel, alloy steel, and stainless steel. We mainly support materials from the following five classification societies: 1. Nippon Kaiji Kyokai (NK) (KSTPT38, KLPB, KSTPA22, KSUS316LW, K304LTP, etc.) 2. Bureau Veritas (BV) (BV360, etc.) 3. DNV GL (DNV) (TS360, GL360, etc.) 4. Lloyd's Register (LR) (LR360, LR410, LR360LT, LR440, etc.) 5. American Bureau of Shipping (ABS) (ABS 2, ABS 3, ABS 4, ABS 5, ABS 1L, ABS 12, etc.) We can also accommodate steel grades other than those listed above. Please feel free to contact us.

There are pipe fittings used for low-temperature piping made of "PL380" and "PL450." ■PL380 Category: Carbon Steel (Aluminum-Killed Steel) Usage: Used for low-temperature piping down to -45°C. Mainly used for fluids such as ammonia and LPG. Our Response: We have steel pipes for some sizes, and for those sizes, we can manufacture relatively quickly. ■PL450 Category: Alloy Steel (3-1/2Ni Steel) Usage: Used for low-temperature piping down to -100°C. Mainly used for fluids such as hydrogen sulfide, CO2, and acetylene. Our Response: This material is not always in stock, but we can accommodate requests. Additionally, austenitic stainless steel and aluminum may also be used. For piping design, please contact Benkan Kiko for welded pipe fittings when selecting PL380, PL450, austenitic stainless steel, or aluminum. *We will provide detailed estimates for delivery times and prices based on your conditions.