香蕉西瓜草莓茄子视频APP-国产精品亚洲欧美大片在线看-日本潘金莲三级bd高清-中文字日产幕码三区的做法大全

Main Products
Products Grade: GCr15-DT
Specifications: φ5.5~26mm
Applied Standard:  agreement
Characteristics: GCr15-DT is better than GCr15 of GB/T18254 on chemical、non-inclusion、Carbide homogeneity、decarburization and surface quality。
Applications: Auto Bearing steelBearing steel
Use of Products: The product is used to produce balls and rings of bearing.