A36 is an American standard specification for carbon structural steel (ASTM A36/A36M), primarily intended for plates, shapes, and bars in bolted, riveted, or welded construction such as bridges and buildings. Steel strip for tooling, springs, or shims is typically supplied under different, more specific standards (e.g., ASTM A109 for cold-rolled carbon steel strip, or spring steel grades).

Our steel strip are widely applied to:
1) construction tools(trowels, putty knives, scrapers, spatulas)
2) cutting tools(band saw blade)agriculture tools
3) roller shutter spring, roller shutter door, spring clip, metal clip
4) shoes metal accessories(shoes insole, shoes shank, toe caps)
5) shims and washers for automobile etc.

Hardened and tempered steel strips
Dimensions
Thickness: 0.08mm to 3.00mm
Width: 2mm to 300mm
Hardness: 40-55HRC
Surface: nature, blue, yellow, white, polish
Edge: slit, round, square
Application: H+T steel strips are widely used for rolling shutter door springs, band saw blade, scraper, trowel, putty knives,
shoe insole, knives, kinds of flat springs, etc, which don`t require severe bending.

Cold rolled annealed steel strips
Dimensions
Thickness: 0.08mm to 4.00mm
Width: 2mm to 320mm
Hardness: max 180HV
Surface: polish, bright
Edge: slit
Application: Cold rolled annealed steel strips are mainly suitable for product requiring or severe bending and shaping before
heat-treatment to very high hardness, such as springs, washers, spacers, clips, pin, inserts, shoe shank, toe cap, auto
components, auto clutches, etc.

Spring steel strip for rolling shutter door
blue spring steel + hardened and tempered conditions
Thickness: 1.0mm-1.6mm thickness
Width: 40mm-80mm width,
Surface: polish blue, grey-blue
Edge: round
MOQ 2tons for each size
good quality and excellent elasticity

From first-rate raw material, cold rolling, quenching and tempering process, de-burring edges, etc. Each production step is checked carefully in width, thickness, hardness, edge as flexibility, toughness, etc.