九色国产熟女视频_午夜影院试看五分钟_91老司机福利在线观看_无码专区亚洲avl_又黄又高潮的视频

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.