Registered the explanatory materials on efforts regarding the quality of stainless steel containers.

We have summarized two tests conducted at our company: the "penetrant testing" of stainless steel containers and the "pressure vessel inspection."

Our company conducts various inspections to maintain the quality of our products. Additionally, if requested by customers, we may perform inspections tailored to their preferences. Here, we will introduce the color check (penetrant testing) and the inspection of pressure vessels among the inspections of our stainless steel containers. However, what is written here represents only a portion of the inspections we conduct, and in reality, there are many other types as well. We hope this explanatory document will serve as a reference when considering stainless steel containers.

• Stainless steel container

This is an introduction to the identification management methods for stainless containers (stainless steel products) conducted as part of quality control.

"Identification management" is one of the essential management practices in product manufacturing. In factories, identification management as part of quality control is likely implemented in various situations, such as with materials and manufacturing processes. While the management methods vary depending on the factory and product, it is necessary to choose the optimal identification method suited to the environment. Here, we will introduce the identification management methods for stainless containers (stainless steel products) used in various situations, including raw material storage, production lines, and integration into machinery.

• Stainless steel container

BA material, 2B material, buff polishing, electrolytic polishing... A grand reveal of stainless steel surfaces that cannot be discerned by the naked eye!

Smooth, rough, silky... Depending on the material and surface finish, stainless steel shows various appearances. However, it is not possible to see what the actual surface looks like just by visual inspection. Therefore, this time, we will introduce photographs of stainless steel surfaces taken using a scanning electron microscope (SEM). *What is a scanning electron microscope (SEM)?* Unlike optical microscopes (such as magnifying glasses and general microscopes) that use light, a scanning electron microscope uses electron beams. It allows us to clearly see fine surface structures that cannot be observed with optical microscopes.

• Stainless steel container

Stainless steel is a metal that is "difficult" to rust!

We sometimes receive inquiries from customers saying, "Even though it's made of stainless steel, it rusted quickly." Stainless steel, as the English words "Stain (rust, corrosion) + less (less) + steel (steel)" suggest, is an alloy of iron that is highly resistant to rust. While it is much less prone to rust compared to regular iron, it is not completely rust-proof. This PDF document summarizes "Why is stainless steel resistant to rust?", "What causes rust on rust-resistant stainless steel?", and "What are the rust prevention measures for stainless steel containers?" You can view it immediately by downloading the PDF.

• Stainless steel container

I have summarized the important cleaning methods to make stainless steel containers last longer.

After using a stainless steel container, it is essential to clean the container. However, incorrect cleaning methods can cause scratches or lead to rust. Here, we will introduce important cleaning methods to help prolong the life of stainless steel containers.

• Stainless steel container

Easy to wash without tools and essential for containers and piping: a summary of the mechanism and related products of "Herl fittings."

When flowing or pouring water and raw materials into stainless steel containers or equipment, I believe that pipes and valves are connected to the containers or equipment. When connecting these, threaded fittings such as sockets and nipples, as well as "fittings" like flanges and hygienic fittings, are used. Here, we will introduce "hygienic fittings," which are used in processes that require a more sanitary environment, including their applications, types, and related products.

• Stainless steel container

Fukuda Co., Ltd. has been pursuing leak detection for 60 years and is committed to advancing the future of leak testing. 【 Supporting Various Leak Tests: Air Leak Test / Gas Leak Test (Hydrogen Gas, Helium Gas) 】 We develop, manufacture, and sell leak testing equipment to inspect airtightness and sealing properties. We will propose the appropriate testers and devices for each inspection target. 【 Target Industries and Examples of Inspection Targets 】 - Automotive Industry: Engines, FC components, valves and piping, various parts - Electronic Components Industry: Smartphones, keyless switches, various small sensors - Pharmaceuticals / Food / Cosmetics Industry: Bottle containers, syringes, vials, eye drop containers, pillow packaging, PTP packaging We will propose the most suitable leak testers for each industry. 【 ISO Certification 】JIS Q 9001:2015 (ISO 9001:2015)

Our speaker lineup has expanded with the introduction of 16 new models. This release includes the first IPX7 waterproof speaker in the standard Φ28mm size and a wideband speaker with the lowest resonance frequency of 130Hz in the 40mm size. Additionally, we have introduced enclosure boxes for acoustic testing with 15 x 11mm, 16 x 9mm, and 18 x 13mm speakers, enhancing our support system to facilitate easier design and prototyping. Size: 20 x 8 x 3 mm to 40.2 x 40.2 x 24 mm Shape: Round, rectangular, square, oval Sound pressure: 81 dB to 106 dB Impedance: 4Ω to 8Ω Resonance frequency: 130Hz to 800Hz Mounting type: 200mm lead wire, solder pad

Azearth Corporation (Headquarters: Taito-ku, Tokyo; President: Fumiaki Saito), a specialized supplier of protective clothing, launched sales of "AZ GUARDⓇ 8100FR"—a disposable protective suit featuring self-extinguishing properties—on July 1, 2026. This product was developed to maintain the performance of flame-retardant workwear and enhance worker safety. For further details, please feel free to contact us via the links below. *AZ GUARD is a registered trademark of Azearth Corporation.

Dear Sir/Madam, I hope this message finds you well and thriving. I would like to express my sincere gratitude for your continued support. We would like to inform you that our company will be closed for summer vacation during the following period: ■ Summer Vacation Period From Saturday, August 8, 2026, to Sunday, August 16, 2026. We will resume normal operations on Monday, August 17, 2026. Inquiries received during the vacation period will be addressed sequentially after the start of business. We apologize for any inconvenience this may cause and appreciate your understanding.

Fukuda's new flagship model. - Masterless type (FLA-0200 series) - General type (FLA-0201 series) Two models of air leak testers. With the mastering correction function, high-precision measurements can be achieved in a short time. Please take a look at the catalog.