亚洲级αv无码毛片久久精品,国产精品亚洲成在人线,久久国产精品久久精品国产,熟妇与小伙子matur老熟妇e,久久久久麻豆v国产精华液好用吗,色一乱一伦一图一区二区精品,精品国产成人亚洲午夜福利,精品久久亚洲中文无码,99久久免费看少妇高潮a片特黄,国产欧美日韩视频一区二区三区

  • <fieldset id="iyu28"><table id="iyu28"></table></fieldset>
    <strike id="iyu28"></strike>
  • <ul id="iyu28"></ul><ul id="iyu28"><dfn id="iyu28"></dfn></ul>

      Home & Garden Sundries Supplier

      WeChat

      What requirements should Jiangmen foreign trade iron barrel follow?

      2021-01-06 433

      What requirements should be followed in the production of tin barrel

      The production of tin barrel should follow certain standards, so as to produce products with high reliability and consistency. The barrel body, top and bottom of the product are made of the whole sheet steel, which is not allowed to be spliced, and the barrel body weld is resistance welding. The barrel body type of tin barrel shall comply with the following regulations:

      There are two ring bars, and there are 3 to 7 corrugations between the ring bar and the top of the barrel and between the ring bar and the bottom of the barrel. The barrel body, top and bottom of the tin barrel shall be filled with sealing filler according to the requirements. The type of double or triple curling can be selected. The closure device shall be set on the top of the barrel according to the opening type.

      江門鐵皮桶

      If you want the tin bucket to be used well, you can't do without grinding

      Rough grinding method, using 600 ? abrasive belt to grind the workpiece on three sides. The goal of this process is to remove the solder joints left by the workpiece welding, and the bumps presented in the previous process, and reach the initial formation of the weld fillet. The horizontal and vertical planes are basically free of large scratches and bumps. After this process, the surface roughness of the workpiece should reach r0.8mm. Attention should be paid to the inclination of the abrasive belt machine and the pressure of the abrasive belt machine on the workpiece. Generally speaking, to be thrown into a straight line with the surface is more moderate!

      Semi finish grinding, grinding the three sides of the workpiece with 800 ? abrasive belt according to the previous method of reciprocating grinding, mainly correcting the joints presented in the previous process and further fine grinding the marks after rough grinding. The marks left by the previous process should be repeatedly ground until there is no scratch on the surface of the workpiece and it is basically bright. The surface roughness of this process should reach r0.4mm. (note that no new scratch or bruise is allowed in this process, because such defects cannot be repaired in later processes.)

      Article source: Jiangmen foreign trade iron bucket http://www.thefriendsco.com/


      Recommended news
      国产亚洲高清不卡在线观看| 国产一线二线三线女| 免费久久久一本精品久久区| 亚洲a无码综合a国产av中文| 少妇被爽到高潮喷水久久欧美精品| 亚洲av无码乱码在线观看裸奔| 国产高清av首播原创麻豆| 无码国产午夜福利片在线观看| 亚洲欧美日韩精品高清| 一级一级毛片无码免费视频 | 蜜桃a人妻精品一区二区三区| 色偷偷色噜噜狠狠网站30根| 国产精品免费_区二区三区观看| 伊人久久五月丁香综合中文亚洲| 在线a免费观看| 在线观看精品视频一区二区三区| 免费美女黄网站久久久| 好看的中文字幕中文在线| 中文字幕久久久人妻人区| 少妇被又大又粗又爽毛片久久黑人 | 欧美日韩国产成人高清视频| 国产精品一区二区久久| 2021国内精品久久久久精免费| 一二三四中文字幕日韩乱码| 亚洲精品中文字幕一二三| 最新中文字幕一区二区| 日本大骚b视频在线| 全部孕妇毛片| 久久久久久久久久免免费精品| 国产视频一区二区三区在线看 | 日本一级二级三级不卡| 大陆国产乱人伦| 男人边吃奶边做好爽免费视频| 欧美精品一级| 久久久婷婷综合五月天| 久久午夜一区二区三区| 97精品一区二区三区| 成人久久久久久久久久久| 久久免费国产精品| 色se在线中文字幕视频| 黄色国产一区二区99|