标准
AISI认证, ASTM, bs, 中国DIN标准, 国标, JIS
生产工艺
2014 HOT SALE High Quality rolling door spring heat treatment
应用
rolling shutter door, spring box
型号
Cortinas Metalicas de Fleje en Acero
color
polished (blue, yellow, white, grey-blue, black, bright) or Nature etc
coil weight
200-250kg or as your requirement
Standard of surface
No flaw, burr, rust.
usage
roller shutter door spring, garage door spring use
application
rolling shutters with spring steel
surface
blue, polished blue
type
steel strip bending for rolling shutters
Surface finish
blue, polish blue