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      1. 国产黄色av网址,在线视频?制服?中文,欧美日韩a,亚洲自拍偷拍一区,中文字幕+乱码+中文字幕一区,国产av制服丝袜,av高清无码,嫩草亚洲小泬久久夂
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        086-577-86923687
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        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
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