三级片a片无码_蜜乳AV成人电影_丝袜足交视频在线_日韩精品中文字幕亚洲专区腿精_安徽搡BBBB槡BBBB_欧美日B操B_非洲AV成人无码久久精品_av尤物_www.亚洲黄_WWWWWW美国黄片_蜜乳av影视_久久久亚洲成人AV无码电影_A片免费看在线不卡_国产无码8区_日屄福利视频

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.