<sub id="8vuke"></sub>
<em id="8vuke"></em>

  1. 久久精品99,国产成人高清精品免费软件,亚洲天堂免费观看,第一宅男AV导航,欧美亚一区,自拍偷拍国产,在线无码免费看黄网站,成人小说一区二区三区
    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: 富婆熟妇熟女二区三区| 亚洲女同精品一区二区| 极品国产主播粉嫩在线观看| www.黄色网址| 午夜黄色免费网站| 日韩激情一区二区无码AV| 亚洲综合社区| 国产XXXX.| 宝山区| 国产91精品对白露脸全集观看| 国产精品视频| 91口爆在线| 日韩人妻少妇中文字幕| 久久伊人精品只有这里有| 日本高清一区| 咸阳市| 国产精品久久九九99九九99| 久久精品99久久久久久久久| 影音先锋成人| 武清区| 少妇精品一区二区三区免费| 国产精品va| 浑源县| 色一情一乱一伦小说| 丝袜一级A片| 狼友福利导航| 精品久久人人做爽综合| 欧美538顶级| 免费高清特黄a大片| 男人天堂二区| av中文观看| 国产人妻久久精品一区| 日韩精品人妻中文字幕不卡乱码 | 熟女荡漾在线| 亚洲成老女av人在线视| 狠狠爱网站| 熟女免费| 久久亚洲aⅴ精品网站婷婷| 中文字幕无码传媒| 欧美亚韩国产| 欧洲激情无码一区二区三区|