日工産業 List of Products and Services

Bulge forming technology enables the creation of seamless, integrated shapes that were nearly impossible to achieve with conventional pressing techniques by combining special processing steps using materials such as stainless steel and aluminum pipes and sheets. We have recently developed and started selling bulge inserts for PC concrete, made from stainless tubes using our unique technology for bulge forming. Please feel free to contact us at any time. 【Features】 ■ Formed screw products using bulge forming technology ■ High workability due to ultra-lightweight design ■ Reduced transportation costs associated with ultra-lightweight design *For more details, please download the PDF document. For sample requests, please contact us.

• Safety and consumables

The "NED" pipe is a stainless steel drainage pipe created by incorporating the advantages of the "egg-shaped sewer pipe" that has been used since the Meiji era. It has a large number of collection holes (1,680 holes/m), which gives it excellent drainage capacity. Additionally, it does not require pre-boring and can be directly inserted. This allows for quick work without the need for special machinery, leading to a reduction in work time. 【Features】 ■ Egg-shaped pipe design ■ Made of stainless steel ■ High drainage capacity ■ Contributes to shortening construction time ■ Spear-shaped tip design (automatically provides drainage slope) *For more details, please refer to the PDF document or feel free to contact us.

• Pipeline Construction
• Drainage material
• Drainage and ventilation equipment

【Merits】 ○ Lightweight and thin ○ Reduction in the number of parts *For more details, please contact us or download the catalog.

• others

This product has been changed from die-cast to pipe material for the purpose of weight reduction. 【Benefits】 ○ Lightweight and thinner ○ Change in material and manufacturing method *For more details, please contact us or download the catalog.

• others

This is a housing for wheelchair caster assembly made from steel pipe Φ28.6×2t through bulging and machining processes. Protrusions have been formed for easy welding of the caster angles on both sides. 【Benefits】 ○ Reduction in the number of parts ○ Automation of welding *For more details, please contact us or download the catalog.

• others

This is a housing formed by bulge forming the threaded sections of galvanized steel pipes Φ60.5×1.6t and Φ97.4×1.6t. It is a product that has transitioned from cast material to pipe manufacturing. 【Advantages】 ○ Lightweight and thin-walled ○ Change in material and manufacturing method ○ Achieving cost reduction *For more details, please contact us or download the catalog.

• others

This is a branch pipe for a water pump, formed into a cup shape from SUS304 steel plate with a thickness of 2mm using spinning (deep drawing) processing, and later shaped with a bulge for protrusions. It is a low-volume production item, and the protrusions are designed to allow easy welding with other pipes. 【Advantages】 ○ Lightweight and thin-walled ○ Transition of materials and manufacturing methods ○ Cost reduction achieved *For more details, please contact us or download the catalog.

• others

This is a faucet made from brass pipe Φ40×2t that has been bent and then bulge-formed. It is a countermeasure product against defects such as air holes that occur when polishing the appearance of conventional cast products. 【Advantages】 ○ Transition of materials and manufacturing methods ○ Cost reduction achieved *For more details, please contact us or download the catalog.

• others

This is a water pump branch pipe formed into a cup shape from SUS304 steel plate with a thickness of 2mm through deep drawing press processing, and later shaped with a bulge for the protruding part. It is suitable for mass production, and the protrusion is designed to allow easy welding with other pipes. 【Advantages】 ○ Transition of materials and manufacturing methods ○ Realization of cost reduction ○ Reduction of welding costs *For more details, please contact us or download the catalog.

• others

This is a water valve housing made from SUS304 steel pipe Φ50.8×2t, formed with a bulge molding process, followed by pressing and machining. It is a product that has transitioned from brass casting to pipe manufacturing. 【Advantages】 ○ Change of material and manufacturing method *For more details, please contact us or download the catalog.*

• others

This is a boiler attachment part made from SUS304 steel pipe Φ27.2×2t, shaped with a bulge forming process for the spanner engagement flat area, and later manufactured using NC processing. The product has been changed from cast iron to pipe material.

• others

This is a bicycle handlebar component made from a steel pipe Φ25.4×2t through bulging, pressing, and machining processes. 【Benefits】 ○ Lightweight and thin-walled ○ Reduction in the number of parts *For more details, please contact us or download the catalog.

• others

"Bulge forming" is a hollow forming process for metal pipes in which a pipe set in a mold is filled with ultra-high-pressure liquid while compressing both ends of the pipe axially, allowing it to be shaped all at once into the design carved into the mold. It is also known as hydroforming and is a plastic processing method using pipes made from carbon steel, stainless steel (SUS), aluminum, copper, brass, and various alloys. This method contributes to reducing environmental impact and product costs through material savings. We can accommodate custom-made products according to your design and development concepts, so please feel free to consult with us. 【Benefits】 ○ Lightweight and thin-walled ○ Reduction in the number of parts ○ Transition in materials and methods ○ Achievement of cost reduction For more details, please contact us or download the catalog.

• others