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: SWRCH6A,SWRCH7A,SWRCH8A
      Specifications: φ5.5~42mm
      Applied Standard:  Q/XG 114
      Characteristics: adapted for all kinds of low intension standard-part and nonstandard -part.
      Applications: Common partsCommon fastenerconstruction fastener steel
      Use of Products: Steel SWRCH6A and SWRCH8A are the common using steels produced the Fasteners of low intension and big deformation and the nonstandard-part. The productions have advantages of steady composition, low harmful element, high pure steel and small surface defect. Using them, it is unnecessary to heat treatment and the rate craze of cold forging is low. They are used in the industry of family electricity, traffic, mechanism and transport.The steel grade gains the gold-cup of the metallurgical product actual quality in 2007.