久久久久久免费毛片精品,亚洲av永久无码天堂网毛片,18成人片黄网站www,天天躁狠狠躁狠狠躁夜夜躁,又湿又黄裸乳漫画无遮挡网站,五月天激情婷婷婷久久,亚洲成a∨人片在无码2023,亚洲国产精品久久亚洲精品,88久久精品无码一区二区毛片,欧美熟妇色ⅹxxx欧美妇

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

News Up Next

Products

: Elliptical head

: Butterfly head

: Spherical head spin edge

: Flat Head

: Spherical head

: Bow bottom head

: Conical head

: Spherical cap shaped head

: Insulation panel

: Expansion Joints

: Jacket (cylinder) rotation side

: Manhole flange

Home Head Series Products News Parameter Company Profile Contact Us Company Culture

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

感谢您访问我们的网站，您可能还对以下资源感兴趣：

久久久久久免费毛片精品,亚洲av永久无码天堂网毛片,18成人片黄网站www,天天躁狠狠躁狠狠躁夜夜躁,又湿又黄裸乳漫画无遮挡网站,五月天激情婷婷婷久久,亚洲成a∨人片在无码2023,亚洲国产精品久久亚洲精品,88久久精品无码一区二区毛片,欧美熟妇色ⅹxxx欧美妇