制服丝袜久久,亚洲日韩欧美特黄一级片,不卡的欧美一区,国产福利网站2025

  • 1
Welcome all the elite valve sales and special valve cooperation, development win-win! Tel 024-72602416

Products

Home  > Products

Corrugated tube elastic hard sealing butterfly valve
Product introduction

Product standard: GB/T 12238-2008

"Universal valve flange and clamp connection butterfly valve"

JB/T 8527-1997 metal hard seal valve

Nominal diameter: DN300-DN2400

Nominal pressure: PN0.25MPa-2.5MPa

Working temperature: less than or equal to 80 DEG C

Connection form: flange

Drive mode: manual, electric, hydraulic

Main material: gray cast iron, nodular cast iron, cast steel, steel plate welding

Uses: thermal power station circulating water system, urban water supply system, etc.. The utility model is used for regulating the water flow through the broken water flow and in the range of 40 DEG -90 deg.

Structural features: bellows flexible metal floating seal valve seat. When opening and closing the sealing surface friction size, opening and closing torque is small. Sealing surface by special processing, high hardness, corrosion resistance, wear resistance, reliable sealing, long service life.


Outline and installation dimensions
Products online booking
Product name Corrugated tube elastic hard sealing butterfly valve
*Order quantity Corporate name
*Linkman *Contact number
*Phone Email
Address
*Message
*Verification Code Please enter what you see
 
? 亚洲精品自慰看片| 欧美第二页91| free性开放小少妇| 日韩精品欧美综合| 一级A色网站| 成人 啪啪啪一区二区三区四区| 5月骚骚5月婷婷丁香网| 欧美成人黄片一级精品| 大粗雞巴久久久久久久久久久| 无码杏津杏一区二区| 久久精品久久少妇| 热热色国产精品一区二区三区九九色| 自拍偷拍 av| 中文字幕三级精品视频| 中文字幕乱码一区二区三区在线下载 | 神马影院伦理| 欧美在线激情网| 日韩欧美黑人一区三区| 国产精品无码一区二区三区三| 国产一二三久久天堂| canoprn超碰在线观看| 久久 婷婷 五月 亚洲| 午夜影院欧美大片| 国产一级黄色片久久久| 国产一区 欧美精品| 日韩欧美国产成人专区在线网站| H一区二区av| wwwx8x8com黄色| 欧美九十一区二区三区| 免费无码福利| 免费三级片自拍| 久久久久91粉嫩| 亚洲综合图片自拍偷拍一区| 免费午夜免费视频| 精品久久人人爽天天玩人人妻| 粉嫩91精品久久久久久| 午夜经曲AV| 午夜成人香蕉av| 日韩av邻家人妻| 成人的视频在线观看欧美日韩| 国产精品久久久幺幺幺幺幺幺|