• <ul id="6cwgo"><center id="6cwgo"></center></ul>
  • <strike id="6cwgo"></strike>
    <bdo id="6cwgo"><wbr id="6cwgo"></wbr></bdo>
  • 免费无码成人AV在线播放不卡,国产精品成人一区二区三区视频,日韩av日韩av在线,伊人久久精品一区二区三区,中文人妻AV高清一区二区,嫩草研究院久久久精品,亚洲啊V天堂在线观看2021,国产精品香蕉视频在线
    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

    主站蜘蛛池模板: 久久99爰这里有精品国产| 国产成人精品亚洲午夜| 亚洲综合欧美色五月俺也去| 成人网站国产在线视频内射视频| 久青草无码视频在线播放| 狼友视频国产精品首页| 亚洲精品天天影视综合网| 国产成av人片久青草影院| 丝袜a∨在线一区二区三区不卡| 亚洲精品v天堂中文字幕| 精品无码视频在线观看| 成人无码特黄特黄AV片在线| 亚洲人妻无缓冲av不卡| 国产精品88久久久久久妇女| 日韩人妻无码精品久久免费一| 国产成人综合色就色综合| 91最新免费观看在线| 国产在线精品一区二区中文| 在线欧美精品一区二区三区| 亚洲人成网77777香蕉| 亚洲精品尤物av在线观看不卡 | 午夜夜福利一区二区三区| 欧美黑人巨大videos精品| 亚洲精品美女一区二区| 欧美综合人人做人人爱| 精品热线九九精品视频| 久久中文字幕人妻熟av女| 国产91午夜福利精品| 国产精品久久综合桃花网| 成年丰满熟妇午夜免费视频| 四虎精品国产精品亚洲精| 伊人久久大香线焦av综合影院| 欧美精品一区二区三区中文字幕| 国产国模一区二区三区四区| 久久婷婷五月综合色99啪ak| 国产三级片视频| 久久―日本道色综合久久| 亚洲av成人无码精品电影在线| 国产精品成人久久电影| 国产精品成年片在线观看| 性视频一区|