ニッセイ機工 List of Products and Services

We manufacture welded pipes using titanium thin plates of less than 1 millimeter, which are used for bellows, heat exchanger shells, floats, and more. The thin plates are processed through cutting, rolling (3-roll processing), and butt welding. A notable feature is our ability to produce sizes that are not available in standard commercial specifications, in increments of 0.10 millimeters. We also perform assembly processing for welded pipes, including the installation of flanges, lids, and end rings, as well as assembly with other components. We conduct airtightness tests using He leak tests. Our products are well-received for their high precision, with minimal bead irregularities and distortions. Features: - We can manufacture within a thickness range of 0.05 millimeters to 1.0 millimeters. - We can accommodate production starting from just one piece. - In addition to stainless steel, we can also manufacture using special materials such as titanium, Hastelloy, Inconel, and nickel. - We can ship within the shortest time frame of two business days. - All manufacturing is done in-house. We produce prototypes, development items, and custom products according to the application and required quantity. For the sizes of welded pipes, please refer to the special page → catalog list → quick reference table for the range of welded pipe manufacturing.

• Pipe Fittings

Size: TP340 0.20t (tube), 0.50t (cap) outer diameter φ23 Usage: Liquid level gauge float Features: A ring-shaped cap is placed on the thin-walled tube end and welded at the end. It is also possible to change the ring shape to a disc for a sealed shape. (The tube in the photo is a commercially available product and is not manufactured by our company.) Order lot for achievements: 20 pieces Our welded pipes are made by cutting and roll forming from sheet material, using micro-plasma welding methods. Welding is performed without filler material, using a butt joint shape. The beads have small irregularities and distortions, and we have received high praise for their precision. Features: - Can be manufactured in a thickness range of 0.05 mm to 1.0 mm. - Production can be accommodated from just one piece. - Not limited to stainless steel, we can also manufacture using special materials such as titanium, Hastelloy, Inconel, and nickel. - Production and shipping can be done in as little as two business days. - All manufacturing is done in-house. We will produce prototypes, development products, and custom items according to usage and required quantities. For the sizes of welded pipes, please refer to the special page → Catalog list → Quick reference table for the range of welded pipe manufacturing capabilities.

• Pipe Fittings

Size: TP340 0.30txφ200x500L (both ends melted) Application: Bellows and similar products Features: We can produce custom sizes not specified in the standards with your specified inner diameter, outer diameter, and length through butt welding. It is characterized by being resistant to cracking of the weld bead even after forming processes like bellows (welding conditions are determined after confirming forming conditions). Order lot: 10 pieces Our welded pipes are made by cutting and roll forming from sheet material and using the micro-plasma welding method. Welding is performed without filler material in a butt joint shape. The weld bead has minimal unevenness and distortion, achieving high precision and receiving positive feedback. Features: - Can be produced in a thickness range of 0.05 mm to 1.0 mm. - Production can be accommodated from just one piece. - Production is possible not only in stainless steel but also in special materials such as titanium, Hastelloy, Inconel, and nickel. - Production and shipping can be done in as little as two days. - All manufacturing is done in-house. We produce prototypes, development products, and custom items according to application and required quantity. For the sizes of welded pipes, please refer to the special page → catalog list → quick reference table for the range of welded pipe manufacturing.

• Pipe Fittings

Size: 6-4Ti 3.0t + 3.0t butt welding Application: Airtight structural container Features: The lathe-processed parts are butt-welded in series to create an airtight container. The interior is machined in sections, allowing for cost reduction through welding. Order history lot: 1 piece Our welded pipes are produced by cutting and roll forming from sheet material using micro-plasma welding methods. Welding is performed without using filler material, in a butt joint configuration. The weld bead has minimal irregularities and distortion, achieving high precision and receiving positive feedback. Features: - Can be manufactured with a plate thickness range of 0.05 mm to 1.0 mm. - Production can be accommodated from just one piece. - In addition to stainless steel, production using special materials such as titanium, Hastelloy, Inconel, and nickel is also possible. - Production and shipping can be done in as little as two business days. - All manufacturing is done in-house. Prototypes, development products, and custom items can be produced according to application and required quantity. For the sizes of welded pipes, please refer to the special page → catalog list → quick reference table for the range of welded pipe manufacturing. (Note: For titanium, the formability differs from that of stainless steel. Please use this as a guideline and contact us for details.)

• Pipe Fittings

Size: TP340 (Pure Titanium Type 2) 0.50t x φ54 x 230L Application: Sleeve for Cover Features: The plate is roll-formed and then welded to create a thin-walled pipe. We can manufacture sizes that are not standard by cutting and roll-forming. Order Lot: 10 pieces Our welded pipes are made by cutting and roll-forming from sheet material using micro-plasma welding. Welding is performed without filler material, using a butt joint shape. The weld bead has minimal irregularities and distortion, achieving high precision and receiving positive feedback. Features: - Can be manufactured in a thickness range of 0.05 mm to 1.0 mm. - We can accommodate production from just one piece. - In addition to stainless steel, we can also manufacture using special materials such as titanium, Hastelloy, Inconel, and nickel. - Production and shipping can be done in as little as two business days. - All manufacturing is done in-house. We can produce prototypes, development products, and custom items according to application and required quantity. For the sizes of welded pipes, please refer to the special page → Catalog List → Quick Reference Table for Welded Pipe Manufacturing Range. (Note: The formability of titanium differs from that of stainless steel. Please use this as a guideline and contact us for details.)

• Pipe Fittings

Specifications: TP340 t1.5 x IDφ1080 x 900L butt-welded Application: Pipe for bellows seamless tubes Features: We have manufactured a welded pipe for forming bellows with a thickness of 1.5mm. This is the thickest plate we produce for titanium welded pipes. Since the unfolded size is nearly 3400mm, we accommodated it with two welding points. We also support butt welding with two or more points. Quantity: 1 piece Our welded pipes are made by cutting and roll forming from sheet material, using micro-plasma welding methods. Welding is performed in a butt joint shape without using filler material. The weld bead has minimal unevenness and distortion, achieving high precision and receiving positive feedback. Features: - Can be manufactured in a thickness range of 0.05mm to 1.0mm. - Production is available from just one piece. - Not limited to titanium, we can also manufacture using special materials such as SUS, Hastelloy, Inconel, and nickel. - Production and shipping can be done in as little as two business days. - All manufacturing is done in-house. We produce prototypes, development products, and custom items according to application and required quantity. For sizes of welded pipes, please refer to the special page → Catalog list → Quick reference table for the range of welded pipe manufacturing.

• Pipe Fittings

Specifications: Pure titanium seamless pipe t0.2 x φ23 + TP340 t0.5 ring, corner welding Application: Cover Features: The t0.2 titanium pipe is corner welded with a t0.5 titanium ring. It has been manufactured as a cover for fitting. Quantity: 40 pieces Our welded pipes are produced by cutting and roll forming from sheet material, using micro-plasma welding methods. Welding is performed without filler material, using a butt joint shape. The weld bead has minimal irregularities and distortion, achieving high precision and receiving favorable reviews. Features: - Can be manufactured in thicknesses ranging from 0.05 mm to 1.0 mm. - Production can be accommodated from a single piece. - Not limited to stainless steel, we can also manufacture using special materials such as titanium, Hastelloy, Inconel, and nickel. - Production and shipping can be done in as little as two business days. - All manufacturing is done in-house. Applications: - Can accommodate helium leak tests and precision cleaning for vacuum products. - Welded pipes can be used for vacuum insulation containers, crucibles, floats, and can be produced according to application and required quantity for prototypes, development items, and custom orders. (Note: The formability of titanium differs from that of stainless steel. Please refer to this as a guideline and contact us for details.)

• Pipe Fittings

Do you have any concerns regarding precision welding processing? ◎ Are you worried about leaks in welding for vacuum containers, underwater pumps, etc.? ◎ Is there a company with such thorough quality control that it even accepts external audits? ◎ Do you want to shorten processes and improve quality? ⇒⇒ Leave it to Nissei Kiko! 【Point 1】 We conduct leak tests with airtight welding! Airtight testing includes helium leak tests, PT (penetrant testing), submersion, and visual inspections tailored to the product, ensuring a system that does not produce defective products and enhances quality! 【Point 2】 Thorough in-process quality control in a clean working environment From the handling and storage of materials to pre-treatment, welding construction, finishing, and inspection, we thoroughly implement in-process quality control with the motto "the next process is the customer." The factory environment is equipped with dust-proof coatings and a permanent air purification system, providing a clean working environment with ISO Class 1 open clean benches, ISO Class 7 clean booths, and welding operations conducted in a controlled clean environment to prevent the inflow of airborne particles. ↓↓ For more details, please contact us or download the catalog ↓↓

• Other semiconductor manufacturing equipment
• Sealing
• Processing Contract

40 years dedicated to butt welding of 0.05mm foil! We can handle materials such as titanium, nickel, Hastelloy, Inconel, in addition to stainless steel! We can accommodate not only simple products like pipes but also the assembly of precision parts with complex structures. *This time, we are giving away a sample kit of 0.1mm titanium foil butt welding.* If you are interested, please contact us. [We will be exhibiting at the Difficult Processing Technology Exhibition] We will introduce our technology for welding foils and ultra-thin plates ranging from 0.03mm to 1mm that we have developed. We will showcase many examples of thin plate and foil welding, including ultra-thin plate welded pipes that can be custom-made from materials such as stainless steel, titanium, Hastelloy, Inconel, and nickel alloys, as well as vacuum-resistant welded components, medical device parts, and thin film manufacturing equipment parts. During the exhibition, our technical staff will be on-site to provide technical consultations and answer any questions. We will send you an invitation. Please feel free to request it through the contact information below. Exhibition period: September 8th to 10th Venue: Pacifico Yokohama, S-40

• Contract manufacturing

Our welded pipes are made by cutting and roll forming from sheet material, using the microplasma welding method. We perform welding without filler material, using a butt joint shape. The beads have minimal unevenness and distortion, achieving high precision and receiving positive feedback. Features: - We can manufacture within a thickness range of 0.05 mm to 1.0 mm. - We can accommodate production starting from just one piece. - In addition to stainless steel, we can also manufacture using special materials such as titanium, Hastelloy, Inconel, and nickel. - We can produce and ship in as little as two business days. - All production is done in-house. Applications: - We can accommodate vacuum products through helium leak testing and precision cleaning. - We manufacture welded pipes for vacuum insulation containers, crucibles, floats, prototypes, development items, and custom products according to the application and required quantity.

• Pipe Fittings

"Do you have any challenges regarding precision welding processing?" ◎ I want to see the item first!! ◎ I want one of each different size because the specifications are not decided! ◎ I want you to manufacture parts other than welding and deliver them as a unit! ◎ I want to alternate between welding and finishing processes to achieve final precision! ⇒ ⇒ Leave it to Nissei Kiko! ◆ Key Points ◆ Small lot production ranging from one to several hundred pieces is our main focus! We accept orders for "one" or "just a little." With creativity and reliable technical skills. We manufacture under consistent quality and management standards. Furthermore, we also respond to requests like "I want you to make parts and turn them into products!" ↓↓ For more details, please contact us or download the catalog ↓↓

• Other semiconductor manufacturing equipment
• Processing Contract

Do you have any challenges regarding precision welding processing? ◎ The previous process took unexpectedly long, and there’s no deadline...! ◎ The post-processing schedule has been moved up...! ◎ Sudden changes in drawings or specifications from the end user...! 　⇒　⇒　Leave it to Nissei Kiko! 【Point 1】Direct support from engineers from concept to prototype to productization Engineers nurtured in a company culture that prides itself on a welcoming attitude towards difficult welding products will provide the best proposals and execution directly. 【Point 2】Thorough process analysis to achieve lead time reduction For repeat products, we conduct thorough process analysis to eliminate waste and work on reducing lead time and improving quality. Please feel free to contact us! 【Point 3】Quick response to urgent welding needs We utilize our "agility," which large companies lack, to respond quickly to delays in previous processes or minor changes in specifications and conditions! ↓↓ For more details, please contact us or download the catalog ↓↓

• Other semiconductor manufacturing equipment
• Sealing
• Processing Contract

This is an introduction to our achievements in precision welding (foil welding and ultra-thin plate welding) across various fields. We will showcase our precision processing achievements in stainless steel. ↓↓ For more details, please contact us or download the catalog ↓↓

• Other semiconductor manufacturing equipment
• Sealing
• Processing Contract

We perform welding assembly of foil (ultra-thin sheets) and machined parts, as well as assembly of precision components. We weld components for energy equipment such as small vacuum chamber assemblies, semiconductor manufacturing equipment parts, and fuel cells used in high-temperature environments, ensuring no leaks or cracks in harsh operating conditions like ultra-high vacuum and low-temperature devices. We also weld medical device components such as implant parts and surgical instruments. 【Features】 - The finish after welding is at the level of machined parts. - Cost reduction. - Proposal for shortened delivery times. → Replacing the production of prototypes and small quantities, which were previously made by cutting or pressing into a single shape, with welding processing. ↓↓ For more details, please contact us or download the catalog ↓↓

• Other semiconductor manufacturing equipment
• Sealing
• Processing Contract

Here are the reasons why 【Nissei Kiko】 is chosen among many welding companies. ◆Reason 1: Ultra-thin Plate Welding We can perform foil (ultra-thin plate) welding! Welding of foil less than 0.1 mm. ◆Reason 2: Sealed Welding Sealed welding technology made possible by 40 years of know-how and thorough in-process quality control. ◆Reason 3: High Quality No leaks! No cracks! No distortions! Reliable quality backed by technology. ◆Reason 4: Immediate Response & Short Delivery Times Technicians respond directly! We shorten delivery times with the best proposals and construction tailored to the product! ◆Reason 5: Small Lot Support Even just one piece is fine. Our strength lies in meticulous work for small lots! Please feel free to contact us! ↓↓ For more details, please inquire or download the catalog ↓↓

• Other semiconductor manufacturing equipment
• Sealing
• Processing Contract

Nissay Kiko Co., Ltd. specializes in microplasma welding and custom-developed jigs, accommodating thicknesses from 0.03 mm to 1.0 mm. We achieve not only welding but also a flat finish with minimal distortion, high dimensional accuracy, and excellent airtightness without leaks. In addition to butt welding, we also perform overlap welding, corner welding, and spot welding depending on the product. Furthermore, we handle welding of pipes with butt joints of less than 1.0 mm in materials such as titanium, Hastelloy, Inconel, and nickel electroformed sheets, as well as contract processing from welding to assembly of precision equipment parts for vacuum devices, semiconductor manufacturing equipment, cryogenic devices, fuel cells, and nuclear-related components. 【Features】 - Capable of ultra-thin plate welding: accommodating thicknesses from 0.03 mm to 1.0 mm - Airtight welding technology made possible by 40 years of know-how and thorough in-process quality control - No leaks, no cracks, no distortion, guaranteed quality backed by technology - Direct and immediate response from technicians! Shortened delivery times with the best proposals and construction tailored to the product - Strength in meticulous work for small lots! Capable of handling orders from one piece For more details, please contact us or download the catalog.

• Other semiconductor manufacturing equipment
• Sealing
• Processing Contract