等級
65M,ck67, ck70, ck75,sk5 etc
処理サービス
溶接, パンチ, 切断, 曲げ, Decoiling, アニール, 黒アニール
Product Name
tempered spring steel 65mn Rolling Shutter Spring 75cr1 steel strip
Material
65M,ck67, ck70, ck75,sk5 etc
Surface
black/bright/polished/blue polished
Coil Weight
Customers'requirement