1. <table id="wlqdz"></table><thead id="wlqdz"></thead>
    2. <del id="wlqdz"><ul id="wlqdz"><kbd id="wlqdz"></kbd></ul></del>
        <em id="wlqdz"></em>
          精品人妻少妇一区二区,瑜伽裤国产一区二区三区,欧美熟妇丰满肥白大屁股免费视频,国模冰莲大胆自慰难受,精品久久久久久综合日本,最新精品国偷自产在线下载,久久婷婷五月综合色欧美,香蕉人妻av久久久久天天
          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

          主站蜘蛛池模板: 丰满大码的熟女在线视频| 国产色婷婷精品综合在线 | 国产精品天堂avav在线观看| 久久精品无码一区二区三区不卡| 性色av无码不卡中文字幕| 韩国日本三级在线观看| 乱人伦中文字幕成人网站在线| 国内丰满熟女出轨videos| 黄色激情视频一区二区| 无码人妻日韩一区日韩二区| 欧洲熟妇色xxxx欧美老妇老头多毛| 国产精品户露av在线户外直播| 东京一本一道一二三区| 看黄色亚洲看黄色亚洲| 德保县| 亚洲日韩国产精品第一页一区| 就去干成人网| 日本妇人成熟免费| 成人免费视频在线观看播放| 人妻洗澡被强公日日澡| 亚洲av激情久久精品人| 无码专区天天躁天天躁在线| 亚洲日韩性欧美中文字幕| 国产在线不卡一区二区三区| 自拍视频在线观看三级| 国产精品国语对白一区二区| 日本无遮挡吸乳视频| 国产成人高清亚洲综合| 欧美成人家庭影院| 人人爽人人模人人人爽人人爱| 无码中文字幕色专区| 四虎永久免费影库二三区| 精品久久久久久中文字幕人妻最新 | 扒开双腿操女人逼的免费视频| 日韩av在线不卡一区二区| 亚洲人成色777777精品音频| 国产精品福利中文字幕| 99久久国语露脸精品国产| 黄a大片av永久免费| 久久香蕉超碰97国产精品| 无码人妻一区二区三区精品视频|