成人做爰高潮a片免费视频,国产精品一区二区毛卡片,亚洲av精品无码国产一区,怎么找附近的寂寞少妇

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

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

Follow Us

无码人妻精品一区二区三区夜夜嗨| 男人添女人下部高潮全视频| 中文乱码字慕人妻熟女人妻 | 青青草視頻國產av劇情超爽系列| 精品国产一区二区三区四区| 好深好湿好硬顶到了好爽| 强行扒开双腿猛烈进入免费版| 性一交一乱一交a片久久四色| 亚洲熟妇无码久久精品| 鸡毛飞上天电视剧全集观看免费 | 欧美边做饭边被躁bd在线看| 男人的天堂av| 黑人强开嫩模又小又紧| 国产精品又黄又爽又色无遮挡| 被夫の上司持久侵犯耻辱在线| 亚洲av在线观看| 亚洲日韩乱码一区二区三区四区| 奶头被民工吸的又大又黑 | 888影视网| 精品久久久久久久免费人妻| 偷窥性别瘾 xxxxx| 欧美在线香蕉在线视频| 岳的又肥又大又紧水有多视频| 御书屋御宅屋高辣h| a片高潮抽搐揉捏奶头视频| 国产免费av片在线无码免费看| 一个添下面两个吃奶把腿扒开| 狠狠躁天天躁夜夜躁婷婷| 青草视频在线播放| 亚洲色成人网站WWW在线观看| 女医剃毛刮毛浓毛妇科检查 | 人与禽性视频77777| av无码国产精品午夜a片| 熟妇女人妻丰满少妇中文字幕| 精品无人乱码一区二区三区| 他强把手指伸进我的下面| 玩弄六个女邻居| 欧美激情性做爰免费视频| 亚洲欧美日韩一区二区| 奶水h人妻销魂共妻高h| 日本japanese丰满白浆|