久久中文字幕久久无码,亚洲日韩va一区二区三区,99re6在线观看国产精品,成人国产精品秘 果冻传媒在线

  • <video id="boa4d"><mark id="boa4d"><noframes id="boa4d"></noframes></mark></video>
  • <b id="boa4d"><acronym id="boa4d"></acronym></b>
    <var id="boa4d"><track id="boa4d"><ins id="boa4d"></ins></track></var>

    <video id="boa4d"><mark id="boa4d"></mark></video>
    <u id="boa4d"></u>

    1. Main Products
      Products Grade: 10B18,10B21,10B28,10B30,10B33,10B33-FY,10B38,Q10B21-C、Q10B23M-C、Q10B21-DW、Q10B21-B、Q15B25M-MT、Q37MnB5、SAE10B18、SAE10B21、15B25、MnB120H、MnB123H、G33B2-B
      Specifications: φ5.5~42mm
      Applied Standard:  Q/XG 137
      Characteristics: The products are mainly used to produce fasteners of class 8.8 ~ 12.9.
      Applications: Common partsFastener steelCommon fastenerHigh strength fastenerconstruction fastener steelsteering system parts
      Use of Products: 10B21,10B28,10B30,10B33 and 10B38 are mainly used to produce fasteners of class 8.8 ~12.9, It has of uniform-chemical composition, low percentage of harmful elements, high purity, slight decarburization, good surface quality, good cold heading performance, low rigidity. They also has characteristics of high intensity and good hardenability after heat treatment. 10B21 gains the gold-cup of the metallurgical product actual quality in 2008. The three steels were identified the lead level of China. 10B21 has been sold the enterprises of the east and the south of China that product the standard parts. And the steel is widely used to product fastener for auto. They have a good reflection.