av无码网址福利_超碰aⅴ亚洲中文字幕_亚洲三级片区无码_亚洲欧洲无码精品Ⅴa

Main Products
Products Grade: QGCr15
Specifications: φ5.5～26mm
Applied Standard:  Applied Standard:agreement
Characteristics: The product is used to produce balls and rings of bearing,which need long life and high reliability.
Applications: Auto Bearing steelRailway bearing steelBearing steel
Use of Products: Use of Products: Because of better raw material and exercise strict control, QGCr15 is better than GCr15 of GB/T18254 on non-inclusion、Carbide homogeneity、decarburization and surface quality. It has good comprehensive properties.