亚洲精品国产精品乱码不卡√-亚洲αⅴ无码乱码在线观看性色-性一交一乱一伦在线播放-欧洲美女粗暴牲交免费观看-在线岛国片免费观看无码

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: 亚洲成av人不卡无码影片| 欧美日产亚洲国产精品| 无码无套少妇毛多69xxx| 亚洲另类国产综合小说| 亚洲精品亚洲人成在线观看麻豆 | 亚洲国产成人av在线观看| 精品亚洲国产成人蜜臀优播av| 欧美日韩在线电影一区二区| 99在线精品视频观看免费| 免费A级毛片在线播放不收费| 日本视频中文一区二区| 少妇被躁爽到高潮无码文| 黑巨人与欧美精品一区| 亚洲色欲色欲www在线观看| 韩国精品久久久久久无码| 日韩高清在线观看不卡一区二区 | 亚洲欧洲国产成人综合在线观看| 无码中文字幕加勒比一本二本 | 免费人成视频网站在线观看18| 香蕉视频在线观看亚洲| 色老头视频一区二区三区| 7878成人国产在线观看| 九色综合狠狠综合久久| 欧美网址一区二区三区| 亚洲妓女综合网99| 国产高清av在线播放| 国产啪精品视频网站免| 欧洲国产一区二区| 曰韩精品无码一区二区三区视频 | 97超碰国产精品最新| 性夜影院爽黄e爽| 日韩伦理一区二区在线观看| 国产午夜成人av在线播放| 国语自产偷拍在线观看| 美日韩中文字幕一区二区三区就行了| 天堂一区| 国产大学生粉嫩无套流白浆| 国产乱码精品一区二区三区五月婷| 非洲黑人最猛性xxxx交| 无码中文人妻在线一区| 久久99精品国产99久久|