材质
65M,ck67, ck70, ck75,sk5 etc
加工服务
焊接, 冲孔, 切割, 折弯, 开卷, 退火, 黑色退火
Product Name
high carbon c 80 en 42 j reeling shutter spring steel strip 65mn
Keyword
reeling shutter spring steel strip
Material
65M,ck67, ck70, ck75,sk5 etc
Surface
black/bright/polished/blue polished
Coil Weight
Customers'requirement