性色欲网站人妻丰满中文久久不卡 ,欧美日韩在线第一页免费观看,欧美日韩久久久精品a片,亚洲成a∨人片在线观看无码 ,欧洲亚洲色一区二区色99,性激烈的欧美三级视频,久久电影网午夜鲁丝片免费,在线观看免费视频污网站
        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: 荡女精品导航| 一区二区三区不卡视频| 欧美经典一区二区| av无码电影一区二区三区| 国产免费人成在线视频| 欧美一级一区| www.香蕉视频在线观看| 老熟女高潮喷水了| 九色九九九老阿姨| 久久伊人影视| 色综合久久久久综合体桃花网| 蜜臀精品无码av在线播放| 青青操在线| www.国产色| 亚洲精品无码永久中文字幕| 99爱在线精品视频免费观看| 日韩一区二区在线视频| 免费黄色a级片| 亚洲熟妇少妇任你躁在线观看无码| 久久99久久99精品免视看看| 99热8| 日韩少妇一区| 日本新janpanese乱熟| 女人张开腿让男桶喷水高潮| 亚洲黄视频| 色老头在线视频| 亚洲精品乱码久久久久久v| 韩国精品福利一区二区三区| 精产国产伦理一二三区| 日本三级一区二区| 国产片AV国语在线观看手机版| 香蕉大美女天天爱天天做| 久久久久中文伊人久久久| 中文字幕精| 中文字幕有码高清日韩| 黑人大长吊大战中国人妻| 女人19水真多免费毛片| 午夜精品一区二区三区在线| 天堂中文8| 亚拍精品一区二区三区探花| 小荡货好紧好爽奶头大视频|