国产亚洲精品久久久999功能介绍_欧美网站免费观看在线_亚洲AV无码成H人动漫无遮挡_亚洲男人天堂一区_色婷婷婷亚洲综合丁香五月_精品欧美无人区乱码毛片

永嘉渤工閥門有限公司
  英文版    中文版
Bohai Valve Co., Ltd. Yongjia
Contact: Mr. Wang
Phone 577 -57796661 / 057796662
Fax 577 -67367855
Phone: 13806833242
E-mail: 258193218@qq.com
Address: Industrial Zone Oubei Puxi
NEWS

What are the features of cast steel gate valves?

更新時間:2018.07.20
Features of cast steel gate valve:
1. Compact structure, reasonable design, good material performance of valve casting steel, valve channel is full-bore structure, can be fully opened and closed, so the channel is smooth and the flow resistance coefficient is small.
2. The gate plate of this gate valve is usually in the form of chock, the sealing cover is welded with alloy stainless steel, and the valve stem is made of 2C13 or 1CR13 stainless iron. The sealing performance is quite good, and it won't rust.
3. Cast steel gate valve is one of the most commonly used cut-off valves. It is mainly used to connect or cut off the medium in the pipeline and is not suitable for regulating the medium flow. Cast steel gate valves are suitable for a wide range of pressure, temperature and caliber, especially for medium and large caliber pipelines.
This article comes from: wwwzgbgvalve.com
今天是
HOME ABOUT US NEWS PRODUCTS NETWORK ORDER <CONTACT US 中文

Copyright 2013 Bohai Valve Co., Ltd. Yongjia LUOTUO All Right Reserved. Address: Yongjia County, Wenzhou City, Zhejiang Province town of North ICP No.: ICP 12045727 No. -1

主站蜘蛛池模板: 中文字幕亚洲乱码熟女一区二区 | 91免费观看网站 | 日本不卡一二三区 | av制服丝袜白丝国产网站 | 国产精品久久久久免费a∨大胸 | 初尝人妻的滋味hd | 欧美一区二区三区四区五区无卡码 | 潮喷大喷水系列无码久久精品 | 超碰97人人做人人爱2020 | 无码国内精品人妻少妇 | 亚洲国产初高中生女AV | 日本在线视频免费 | 亚洲一区二区三区AV无码 | 成年美女黄网站色大片免费看老狼 | 国产专区2| 天堂AV无码AV日韩AV | 日韩一区二区三区免费高清 | 国产伦精品一区二区三区综合网 | 色欲综合五月丁香五月 | 国产女极品在线观看AV | 免费人成网站在线观看不卡 | 人人草人人搞 | 国语自产精品视频在线看 | 国产会所在线观看 | 四虎影视黄色 | 免费视频 久久久 | 亚洲无吗视频在线 | 无码国产偷倩在线播放老年人 | 国产精品亚洲W码日韩中文 欧美变态另类ZOZO | 涩涩网站视频 | 日本一码二码三码的穿着建议 | 欧美日韩综合在线精品 | A片无码国产精品性BBV | 久久久精品小视频 | 久久久久视 | 国内操人网站 | a人片在线观看苍苍影院 | 中国农村熟妇性视频 | 人人91 | 6080午夜三级中文在线观看 | 曰本人做爰大片免费观看一老师 |