<small id="bmdj2"><th id="bmdj2"></th></small>

<kbd id="bmdj2"><form id="bmdj2"></form></kbd><dd id="bmdj2"><form id="bmdj2"></form></dd>
    • <b id="bmdj2"><abbr id="bmdj2"></abbr></b>
      <del id="bmdj2"><form id="bmdj2"></form></del>
    • Service Hotline
      086-577-86923687
      Current Location:Home - News - Products Knowledge
      Comparison Process head cold and hot processing
      Release Time:2011-10-26  Views :
      Processing head is generally divided into cold and hot working are two, compare the following three aspects of the two paper processing head were:
       
      A, head cold material deterioration does not occur, especially suitable for processing stainless steel head;
      Thermal processing material deterioration will occur, resulting in decreased corrosion resistance of stainless steel head, stainless steel head is not suitable for processing.
      B, cold will not change the size of the contraction caused by cooling, regular shape, size, accuracy and consistency;
      Hot forming mold can cause thermal expansion and contraction of the cooling head, the size difference is difficult to control and consistency.
      C, to maintain the surface after head cold forming smooth surface of the original material, beautiful appearance.
      Surface oxide formed after thermal processing head of serious and difficult to remove.
      Key Words : 不銹鋼封頭
      Products
      Elliptical head
      Elliptical head
      Butterfly head
      Butterfly head
      Spherical head spin edge
      Spherical head spin edge
      Flat Head
      Flat Head
      Spherical head
      Spherical head
      Bow bottom head
      Bow bottom head
      Conical head
      Conical head
      Spherical cap shaped head
      Spherical cap shaped head
      Insulation panel
      Insulation panel
      Expansion Joints
      Expansion Joints
      Jacket (cylinder) rotation side
      Jacket (cylinder) rotation side
      Manhole flange
      Manhole flange
      NAVIGATION
      Wenzhou Shangshang Metal Products Co., Ltd.
      Add : 208,Zhanhong Road,Dushan,Longwan CentralIndustry,Wenzhou
      Tel : 086-577-86923687 85981288  Fax : 086-577-86913687
      All Rights Reserved © 2016 Wenzhou Shangshang Metal Products Co., Ltd    Zhejiang ICP No. 08,005,782
      • Follow Us

        Follow Us

      久久亚洲精中文字幕,2020国产综合精品,午夜视频精品视在线播放,激情视频免费在线欧美国产

      <small id="bmdj2"><th id="bmdj2"></th></small>
      
      

      <kbd id="bmdj2"><form id="bmdj2"></form></kbd><dd id="bmdj2"><form id="bmdj2"></form></dd>
      • <b id="bmdj2"><abbr id="bmdj2"></abbr></b>
        <del id="bmdj2"><form id="bmdj2"></form></del>
      • 91福利国产在线在线播放| 国产日韩久久久久熟女| 中文字幕日产乱码乱偷在线| 国产精品视频超级碰| 精品免费久久久国产| 视频二区 中文无码 制服师生| 一本大道久久精品?东京热| 亚洲日韩国产另类| 精品人妻一二三区| 99热这里国产免费久久| 99re在线视频精选| 久久中文字幕乱码久久午夜| 午夜麻豆国产精品| a级毛片高清视频| 国产尤物无毒不卡| 欧美日韩亚洲国产综合乱| 国产99视频精品免费观看9| 99精品一区无码在线观看| 欧美一区二区三区精品|