狠狠干狠狠爱-亚洲综合第一页-人人澡人人澡-亚洲第一在线-亚洲在线视频观看-亚洲第一综合-国产青青操-成人性生交大片-91午夜精品-成人7777-国产精品久久久久久久久久久久午夜片-国产高清sp-国产一二区视频-99er热精品视频-超碰伊人网-欧美最猛性xxxx-毛片网站有哪些-免费在线观看91-久久久国产亚洲-久久久久久久久久久99-黄色电影小说网站-国产第一草草影院-欧美视频在线观看一区二区三区-免费韩国电影app下载-痞帅gay大猛一xnxx18-日韩欧美一级精品久久-少妇裸体做爰免费视频软件-国产精品人人妻人人爽人人牛-狠狠操狠狠干狠狠爱-在线免费观看污污

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