rolling shutter roll-up door spring

1.rolling shutter roll-up door spring, 2.CK67/CS70/SAE1065, 3.springs for doors, 4.professional work on cutting - details see: https://www.buildingsupplieshub.com/rolling-shutter-roll-up-door-spring-10051690

Type: Shutters	Place of Origin: Guangdong China (Mainland)	Material: High carbon steel strip	Opening Pattern: Horizontal
Coil ID: 300-500mm	Coil OD: 800-1000mm	hardness of steel: 43~55HRC	Yield Strees(Strength): 370-1175 N/m㎡
Tensile Strength: 540-1275 N/m㎡	Standard of surface: No flaw, burr, rust	Edge of steel: one side round and one side slit	Poisoning elements P&S: less than 0.035%

A high-carbon steel that can be oil or water hardened, AISI 1070 also performs well in hand and machine tool applications.

Heat treatment is carried out mainly for reducing sheet thickness, improving surface finishing, preparing the surface for coating and providing a range of tempers.

Cold rolled steel sheets offer a wide variety of outstanding appliances, furniture and with many other items.

Complete facilities for Slitting – Shearing – Blanking and Edging.

Thickness Range: 0.15~ 2.5 mm

Width range: 8 ~ 650 mm

High Hardness: Max. Rockwell-C 55 (HRB120, HV555)

Standard/quality: DC01, DC03, DC04, DC05, DC06 according to EN Standards

CD, DQ, DQSK according to ASTM Standards

Enameling Grades:

DC01EK, DC04EK or EK2, EK4

Finishes: grey blue, polished blue

Edge: both round

Tempers: Full hard, Soft for cold forming.