日韩亚洲一区中文字幕在线,黄色视频免费观看网站,9191精品国产免费久久,欧美日韩三四级视频在线观看,亚洲国产成人久久综合碰,国产午夜av毛片久久,真人抽搐一进一出gif免费木瓜视频

Main Products
steel for anchor-chain Products>> Main Products>> steel for anchor-chain
Products Grade: 30CrMnTi
Specifications: Φ6.5-24 mm
Applied Standard:  GB 3077—1999
Characteristics: 30CrMnTi is mainly used for the manufacture of motorcycle chain shaft,cementite smasll shaft and small gear wheel.
Applications: Common mechanical steel
Use of Products: The Mine High Strength Circular Chain Steel strictly controlled chemical content and the inclusions,low tramp elements and good surface quality. Through the rational control of the chemical content and the optimization the rollings, the product has excellent hardenability.