免费av在线-91蜜桃视频-亚洲niry欣赏pics大全-羞羞免费视频-欧美视频在线观看一区-欧美日本在线播放-荡女精品导航-99国产精品免费视频-狠狠一区-在线免费观看www-床戏高潮做进去大尺度视频网站-国产你懂-又黄又湿的免费视频-美女私密视频网站-免费在线观看精品

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