国产 亚洲 欧美 另类中文,中文字幕日韩高清DVD,国产免费一区二区三区蜜桃,麻豆精品在线播放

<var id="49rs0"><source id="49rs0"><meter id="49rs0"></meter></source></var>
  • <table id="49rs0"><acronym id="49rs0"></acronym></table>
  • <rp id="49rs0"></rp>

    <source id="49rs0"></source><table id="49rs0"></table>
  • <u id="49rs0"></u>
    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.