hardened and tempered steel strip for rolling shutter spring

Standard:

AiSi, ASTM, bs, DIN, GB, JIS

Steel Grade:

C67,

Place of Origin:

Jiangxi, China

Technique:

Hardened and tempered

Surface Treatment:

Polished Blue ,Grey Blue

Application:

For rolling shutter door accessories

Brand Name:

shunda strip steel

Width:

45mm 50mm

Length:

3M,3.5M,4M,4.5M,5M,5.5M,6M

Tolerance:

±1%

Grade:

CK67

Color:

Black, Blue, Bright and Yellow