中文字幕在线亚洲精品,国产精品www夜色视频,国产精品av在线,久久久久夜夜夜精品国产,国产做爰又粗又大又爽动漫,欧美人妻aⅴ中文字幕,亚洲av无码国产综合专区,国产又色又爽又黄的,亚洲熟妇自偷自拍另欧美,狠狠精品久久久无码中文字幕

Service Hotline
086-577-86923687
Current Location:Home - News - Industry News
Head types and production methods
Release Time:2011-11-23  Views :
Category Head
 
Head Material can be divided into: plastic, stainless steel seal top, head products are mostly male, cone shell, adjustable sections, flat lid and tightening the mouth. Wherein the convex head (sometimes referred to by the shape classification) comprising: a hemispherical head, oval head, dished head and a spherical cap-shaped head.
Head of manufacturing methods
a) Small head: the overall shape;
b) large and medium-sized head: first splicing molding - the most widely used, mainly for the requirements of the standard in terms of it;
c) large head: because of factors such as transport and open file request to split forming, after welding together.
Key Words : 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

亚洲国产成人AV人片久久网站| 国产办公室秘书无码精品99| 2021国产精品国产精华| 成人国产精品999视频| 久久综合一本中文字幕| 精品一区二区av在线| 中文字幕人妻第一区| 亚洲色偷偷色噜噜狠狠99| 国产精品女同学| 91九色中文视频在线观看| 色狠狠色噜噜av天堂一区| 少妇的丰满3中文字幕| 亚洲精品国产熟女久久| 中文字幕免费人成在线网站| 成人欧美一区二区三区| 97视频在线观看免费| 日本一级二级三级在线| 久久综合99re88久久爱| 国产精品人妻一码二码尿失禁| 久久免费精品国产72精品剧情| 日本一区二区三区在线视频播放| 天天躁日日躁狠狠躁欧美老妇小说 | 亚洲中文字幕一区高清在线| 亚洲狠狠婷婷综合久久久久 | 日本丰满熟妇videossexhd| 日日摸夜夜添无码无码av| baoyu网址国产最新| 亚洲乱码中文字幕综合久久| 免费看黄a级毛片| 国产精品久久久久尤物| 一区二区三区免费自拍偷拍视频| 日本一卡二卡3卡四卡免费观影2022| 超碰97人人做人人爱少妇| 最新永久免费AV网站| 一本一道久久综合久久| 精品少妇人妻av无码久久| 内射人妻少妇无码一本一道| 国产成人精品一区二区视频| 国产亚洲美女精品久久久2020| 久久精品女同亚洲女同| 九色九九九老阿姨|