污视频网站在线观看-日本a在线-av无码一区二区三区-中文字幕久久久久-女攻总攻大胸奶汁(高h)-精品无码一区二区三区的天堂-国产又粗又猛又黄又爽的视频-亚洲人天堂-亚洲视频免费播放-亚洲熟妇无码乱子av电影-日韩中文网-伊人手机在线视频-av福利片-亚洲综合色一区-白白色在线播放-九九色精品-男女视频一区-欧美性猛交xx乱大交-日韩欧美理论片-就去吻亚洲

      Honed pipes are different from ordinary pipes, so both their processing methods and pipeline layout have very special requirements. A detailed description is given around these two aspects so that the effectiveness of the honing tube can be fully utilized.
      The honing pipe is essentially a specially treated high-precision seamless steel pipe. Its good performance makes it useful in various fields. When laying out the honing tubes, both arrangement and direction should be neat and consistent, and the layers should be clear. Try to arrange it horizontally or vertically, and there are strict regulations on parallelism and verticality.
     The cutting of honed pipes is also relatively slow. If the diameter is greater than 50mm, it is best to use mechanical processing to ensure that the cut surface of the pipe is smooth and there are no defects such as burrs, scale, and slag.