永井鋼業 List of Products and Services

Our company handles "rock bolts" suitable for the NATM method, solving issues related to workability and adhesion. We offer a lineup that includes "twisted bar steel rock bolts," "deformed bar steel rock bolts/sewing bolts," and "screw bar rock bolts/high-strength rock bolts." Using deformed bars and screw bars manufactured consistently at JFE Steel Corporation's Mizushima Works, specialized factories process them under unique quality control to ensure stable supply. 【Features of Twisted Bar Steel Rock Bolts】 ■ Made from deformed bars manufactured consistently under sufficient quality control ■ Provides stable strength ■ Has stable yield strength ■ Excellent adhesion strength ■ Easy insertion into boreholes *For more details, please refer to the PDF document or feel free to contact us.

• Tunnel Materials

Our company handles various types of rebar, including general rebar "Kurocon," threaded rebar "Nejibar," and high-strength shear reinforcement bars "J Hoop 785." We manufacture a wide range of sizes from small diameters to large diameters (D10 to D51) and from low strength to high strength (SD295A to USD685B, JH785), making it possible to apply them to various structures and structural components, from low-rise to super high-rise buildings. This ensures reliable and economical design. Additionally, we can manufacture rebar with special specifications, such as toughness guarantee type rebar (which limits the upper yield strength to 1.1 times the base strength and has upper limits on yield ratios). This allows for the realization of a beam bending yield-preceding collapse mechanism, resulting in structures with excellent energy absorption performance. 【Features】 ■ Suitable for low-rise to super high-rise buildings ■ Capability to accommodate toughness guarantee type rebar ■ Excellent material properties ■ Flexible delivery system *For more details, please refer to the PDF document or feel free to contact us.

• Piping materials (copper pipes, cast iron pipes)
• others

We process and sell rock bolts from JFE Steel Corporation. We have developed rock bolts suitable for the NATM method, solving issues related to workability and adhesion. Using deformed steel bars manufactured consistently at JFE Steel Corporation's Mizushima Plant, our specialized factory processes them under unique quality control to ensure stable supply. 【Products】 ■ Twisted bar rock bolts ■ Deformed bar rock bolts / Stitching bolts *For more details, please download the PDF or feel free to contact us.

• Steel
• others
• Work tools