• <pre id="vnc4h"><samp id="vnc4h"><legend id="vnc4h"></legend></samp></pre><th id="vnc4h"><samp id="vnc4h"><legend id="vnc4h"></legend></samp></th>
    <dfn id="vnc4h"></dfn>

    <th id="vnc4h"><pre id="vnc4h"><legend id="vnc4h"></legend></pre></th>

    久久伊人777777|性爱高潮视频|97超碰福利|日本久久久久|三级无码毛片|毛片午夜网|特级欧美AAAAAA|日韩av怎么搜|免费AV播放|国产在线超碰

    久久伊人777777|性爱高潮视频|97超碰福利|日本久久久久|三级无码毛片|毛片午夜网|特级欧美AAAAAA|日韩av怎么搜|免费AV播放|国产在线超碰

    久久伊人777777|性爱高潮视频|97超碰福利|日本久久久久|三级无码毛片|毛片午夜网|特级欧美AAAAAA|日韩av怎么搜|免费AV播放|国产在线超碰

    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

    久久伊人777777|性爱高潮视频|97超碰福利|日本久久久久|三级无码毛片|毛片午夜网|特级欧美AAAAAA

    
    
  • <pre id="vnc4h"><samp id="vnc4h"><legend id="vnc4h"></legend></samp></pre><th id="vnc4h"><samp id="vnc4h"><legend id="vnc4h"></legend></samp></th>
    <dfn id="vnc4h"></dfn>

    <th id="vnc4h"><pre id="vnc4h"><legend id="vnc4h"></legend></pre></th>

    91日本性爱| AV资源在线播放| 特黄一级av片| 北京AV导航| 免费日韩一级片| 性爱A片一级免费| 日本成人电影久久久| 日本成人777| 亚洲av导航电影| 91超碰福利| 东京热天堂| 激情五月婷婷天晴| 成人AA级色片| 韩国一级特黄A片高清| 久久五月天青春草| 怡春园在线| 69成人视频| A片日韩在线成人| 免费看成人A片无码照片| va另类视频| 亚洲无码A级片| 亚洲黄色AV网址| 亚洲无码2021| 成人一级黄色无码| 成人黄色电影在线观看| 黄色e燥视频逼| 黄色特级视频| 97色色色色色色色色色| 一级国产A片| 高清A V在线| 毛片一曲二曲三曲| 国产AV色图| 亚洲一级片偷拍| 特级黄色大片| 可以看的A片网站| 三级AA片| AV黄色一级片| 日韩A V免费看| 啪啪啪无码| 久操日本A级片| 日韩A片很日|