Espesor: 1.0/1.1/1.2/1.25/1.3/1.4/1.5mm

Ancho: 30/35/40/45/50/55/60/70/80mm

Dureza: 44-48HRC.

Bordes: Redondos.

Superficie Acabada: Azul.

appliations:roller shutter steel door, garage door, roller shutter metal door

material:C67S, c75s(SAE1070,SAE1075)

surface:polish blue/blue

edge: rounded

hardness:43-49hrc

appliations:  roller shutter steel door, garage door, roller shutter metal door

material:C67S, c75s(SAE1070,SAE1075)

surface:polish blue/blue

edge: rounded

hardness:43-49hrc

appliations:  roller shutter steel door, garage door, roller shutter metal door

material:C67S, c75s(SAE1070,SAE1075)

surface:polish blue/blue

edge: rounded

hardness:43-49hrc

appliations:  roller shutter steel door, garage door, roller shutter metal door

material:C67S, c75s(SAE1070,SAE1075)

surface:polish blue/blue

edge: rounded

hardness:43-49hrc

Guang Zhou Cgood Steel steel strip for shutter spring is well-know good quality for this application. We understand that the flexibility is the key for shutter spring when the door rolling down and rolling up and strip steel can`t be broken when bending.