C67 steel strip for rolling shutter door flat spring
GuangWeiYouLiang(gdgwsteel)'s C67 steel strip for rolling shutter door flat spring has great performance, the material we manufactured with enough strength on elasticity, durable and antifatigue which not easy to break under the frequently operation, lifetime is over 10 years,
Material grade: C67 60Si2Mn C75
Surface: blue
Edge : both sides round
Hardness: 40-48HRC
Shutter spring steel strip
Commonly size posted below for check:
|
Width/
Thickness
|
1.20
mm
|
1.25
mm
|
1.30
mm
|
1.35
mm
|
1.40
mm
|
1.45
mm
|
1.50
mm
|
1.60
mm
|
|
30mm
|
-
|
-
|
-
|
-
|
1.4x30
|
1.45x30
|
1.5x30
|
1.60x30
|
|
35mm
|
-
|
-
|
-
|
-
|
1.40x35
|
1.45x35
|
1.50x35
|
1.60x35
|
|
40mm
|
-
|
-
|
-
|
1.35x40
|
1.40x40
|
1.45x40
|
1.50x40
|
1.6x40
|
|
45mm
|
1.20x45
|
1.25x45
|
1.30x45
|
1.35x50
|
1.40x45
|
1.45x45
|
1.50x45
|
1.60x45
|
|
50mm
|
1.20x50
|
1.25x50
|
1.30x50
|
1.35x50
|
1.40x50
|
1.45x50
|
1.50x50
|
1.60x50
|
|
55mm
|
1.20x55
|
1.25x55
|
1.30x55
|
1.35x55
|
1.40x55
|
1.45x55
|
1.50x55
|
-
|
|
60mm
|
1.20x60
|
1.25x60
|
1.30x60
|
1.35x60
|
1.40x60
|
1.45x60
|
1.50x60
|
-
|
Project Case:
