国产一区在线播放,午夜AV爽歪歪,日韩成人在线视频传媒,免费孕妇操逼视频福利t

Main Products
Products Grade: 2Cr13A
Specifications: Φ5.5-16mm
Applied Standard:  agreement
Characteristics: bearing
Applications: Axial
Use of Products: 2Cr13A is martensitic stainless steel, it have good toughness and machining after annealing. Which also possess high hardness and strength after quenching. moreover, 2Cr13A have good corrosion-resistance and abrasive resistance.