国产亚洲欧洲日韩在线三区 手机国产乱子伦精品视频 国产睡熟迷奷视频

  • <table id="ybvxc"></table>
      1. 
        
        1. <td id="ybvxc"></td>
          <acronym id="ybvxc"><strong id="ybvxc"></strong></acronym>
        2. Set for home page | Add collection | Contact me
          Product supply
          Technology
          Service
          Weather
          Map
          Translation
          Wikipedia
          Trains
          Hotel&tourism
          Code&zip
          Financial
          entertainment
          Technology
          How to determine the seal form
          Time:2011-4-14
          I use the seal in the form of existing products are: packing, mechanical seals and sealing three forms of power.
          1, packing:
          Advantages: simple, cheap, easy maintenance; Disadvantages: leakage volume, pressure for a liquid seal, the number of leak points will appear. Our company is only in the volatile liquid medium or horizontal pump seal pump with non-critical condition, but also as a combination dynamic seal and secondary seal after stopping use.
          2, mechanical seal:
          Advantages: good sealing effect, leakage, long life; Disadvantages: expensive.
          Mechanical seal pumps, as the company forms the main seal, basically all the products in my company to use for different conditions, can form different combinations.
          With different washing programs, sealed in the back of the column we will discuss in detail. Our company is production for the mechanical seal has reached domestic leading level, the companys third-generation
          Set-like mechanical seals are also fully meet the API682 standard.
          3, the dynamic seal:
          Advantages: reliable, easy maintenance, ability to adapt to working conditions; drawback: the need for auxiliary parking seal.
          I generally dynamic sealing applications in the transportation of solid particles more media, and LZ vertical pump and other products.
          editor:kongfanchang
        3. <table id="ybvxc"></table>
            1. 
              
              1. <td id="ybvxc"></td>
                <acronym id="ybvxc"><strong id="ybvxc"></strong></acronym>
              2. 品牌简介

                {转码主词}亚洲精品国产第一区二区 国产短视频精品收藏 大臿蕉香蕉大视频在线 欧美+日产+国产在线观看 无码不卡A片在线观看 香蕉伊蕉伊中文在线视频 日韩av东京社区男人的天堂 人妻人人做人碰人人添 欧美+日产+国产在线观看 亚洲乱码中文字幕综合 午夜福利片1000无码 日本在线高清毛片不卡视频 久久国产精品 久久人妻无码日本 2020国自产拍精品网站不卡 精品国内亚洲线在 欧美日韩亚洲中文字幕二区 中国亚洲日韩a在线欧美 人妻人人做人碰人人添 狠狠噜天天噜日日噜国语 最新2020无码中文字幕在线视频 久久五月丁香中文字幕 婷婷五月综合丁香在线 疼死了大粗了放不进去视频 欧美视频专区一二在线观看 一本视频在线观看一区 亚洲乱码中文字幕综合 黄页网站大全免费 久久五月丁香中文字幕 亚洲精品综合欧美一区二区三区 狠狠做五月深爱婷婷伊人 国产极品粉嫩在线播放 91麻豆精品国产自产在线观看直播 亚洲,色,图五月综合 亚洲AV极品无码2020国产