General-purpose products

H series (high-strength steel pipe)

It is best for uses that require steel-pipe strength. It is used for car headrests stays, hammer handles, crowbars, and other products. Weight can be reduced while keeping strength, and the series can be produced to a tensile strength of about 1,000 (N/mm2). Depending on the material, the surface shine and workability can be increased.

Product code Finishing classification Main uses
H490C
H490H
Manufactured pipe with a tensile strength of 490 N/mm2 or greater. For cars
Seats, parts for tools
Metal tools, steel furniture
H550C
H550H
Manufactured pipe with a tensile strength of 550 N/mm2 or greater.
H590C
H590H
Manufactured pipe with a tensile strength of 590 N/mm2 or greater.
H650C
H650H
Manufactured pipe with a tensile strength of 650 N/mm2 or greater.
H750C Manufactured pipe with a tensile strength of 750 N/mm2 or greater.
H800C Manufactured pipe with a tensile strength of 800 N/mm2 or greater.

Usage examples

Car headrest stay
・ Required qualities

High strength, light weight, workability, surface shine

Hammer handle, crowbar
・ Required qualities

Hardening, tempering properties, ellipse processing, surface shine

How to read product codes