Place of Origin
Jiangxi, China
Grade
alloy steel ,carbon steel
Oiled or Non-oiled
Slightly Oiled
Application
roller shutter door spring
Certificate
CE, RoHS, GS, ISO9001
Tolerance
thickness tolerance+/-0.01mm
Processing Service
Bending, Welding, Decoiling, Cutting, Punching, Annealed
product name
roller shutter door spring steel strip
width max tolerance
+/-0.03mm
thickness max tolerance
+/-0.01mm
materail
65Mn,CK50,CK67,CK75,51CrV4,75Cr1 etc.
surface color
blue,polished bright,golden etc.
edge
slit , round , square etc.
condition
hardened and tempered
Steel Grade
ck67,sae1070,ck75 ,ck50,sae1074 ,50crv4 ,51crv4 etc.