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://m.thefriendsco.com/


      Recommended news
      一区二区三区在线免费av| 国产裸体美女永久免费无遮挡| 奇米影视第四色首页| 亚洲综合色成在线播放| 国产日韩久久久久69影院| 免费在线不卡黄色大片| 中文字幕av伊人av无码av | 神马影院日本一区二区| 亚洲欧美乱综合图片区小说区 | 日本少妇被爽到高潮的免费| 五十路在线中文字幕在线中文字幕| 亚洲精品中文字幕91| 午夜精品久久久久久久| 又白又嫩毛又多15p| 久久99国产亚洲高清观看韩国| 久久久久国产精品四虎| 久久精品熟女亚洲av香蕉| 国产超碰人人做人人爽av大片| 亚洲黄色电影| 亚洲av综合日韩精品久久久| 青青草成人免费在线观看视频| 妺妺窝人体色www聚色窝| 欧美国产小视频| 天堂av一区一区一区| 激情五月婷婷一区二区| 国产成人av片在线观看| 国产麻豆精品一区二区三区v视界| 亚洲av高清资源在线观看三区 | 亚洲av第一区综合激情久久久| 亚洲精品中文字幕91| 夜夜高潮夜夜爽国产伦精品| 无码aⅴ在线观看| 国产精品一区二区三密桃| 免费亚洲老熟熟女熟女熟女| 国产精品ⅴ无码大片在线看 | 国产人澡人澡澡澡人碰视频| 亚洲五码av在线观看| 风情韵味人妻hd| 日韩亚洲av无码一区二区三区| 亚洲深夜福利| 日韩av中文字幕少妇精品|