日本变态残虐特级a片受难,成人做爰a片免费播放,brazzers欧美巨大,久久精品国产99国产精品导航

Four Roll Rolling Machine
product center
Home > Product > Four Roll Rolling Machine

W12NC-6x1500- Four Roll Rolling Machine

W12NC-6x1500- Four Roll Rolling Machine

Product Details




  Main uses and scope of application of products

  The W12NC-6x1500 type four roll bending machine is a sheet metal bending and correcting machine. It is specially used for forming and bending of metal plates. Pre-bending and crimping of cylindrical and arc-shaped workpieces of various specifications can be completed after one-time feeding. With the aid of auxiliary devices, conical cylinders can be rolled. The metal sheet can also be roughly reshaped.

  This machine is a four-roll plate winder. Its structure is shown in Fig. 1. The upper roll is the active roll, the lower roll and the side roll are the driven rolls. The position of the upper roll is fixed, the lower roll and the side roll can be lifted and moved. The upper roll is mechanically driven. The rotation of the lower and side rolls is driven by the friction between the steel plate and the rolls. Both the lower and the side rollers are driven by the two ends of the cylinder to realize the lifting movement. The reversing and resetting of the upside-down body of the upper roller are carried out by the oil cylinder, and the bearing bodies and the oil cylinders of each roller are installed in the racks at the left and right ends. The left and right stands are the main body of the four roll bending machine, and the welding structure is installed on the whole base. All operations of the machine are carried out on the operating platform.

  Compared with the symmetrical three-roll plate winding machine, the four-roll plate winding machine can bend the end of the plate directly without the aid of other equipments and dies, and the remaining straight edge is smaller; it can make the plate turn into a workpiece without turning the head.


Online Message


  • PHONE
  • message
    MESSAGE
  • map
    MAP
  • ewm
    QR CODE
  • bdsm变态狂极端妓女| 国产手机在线精品| 大杳蕉狼人欧美篇75| 男男触手play到娇喘产卵憋尿| 精品综合久久久久久888蜜芽| 护士扒下内裤让我爽一夜| 9277在线观看免费高清| 羞羞答答麻豆国产免费观看 | 圣女当众被迫高潮h高| 国产精品无码AV片在线观看播| 色偷偷av亚洲男人的天堂| yin荡的人妻美妇系列| 青梅被从小摸到大h补课1视频| 美妙人妻系列100部| 欧美熟妇xxxxx欧美老妇不卡| 国产后入又长又硬| 少妇人妻一区二区三区视频| 肉乳床欢无码a片| 搡老熟女多毛丰满国产精品| 久久天堂综合亚洲伊人HD妓女| 偷窥50个美女撒尿高清| jizzjizz欧美69巨大| 对白荡伦系列之子你不能这样我| 色偷偷av亚洲男人的天堂| 男男乱J伦高HH黄暴双性| 妓女嫖客叫床粗话对白| 女人奶水milk的hd| 好爽…又高潮了毛片免费看| 高清中文字幕在线a片| 精品人妻av无码一区二区三区 | 亚洲av永久无码精品天堂d2 | 首长含着她的胸挺进柔软里| 一路向西在线观看完整版| 川上奈美夫の上司に犯 在线观看| 韩国三级中文字幕hd久久精品 | 亚洲精品动漫免费二区| 免费视频在线观看爱| 久久久国产精品免费a片3d| 成人欧美日韩一区二区三区| 18欧美乱大交| 日本美女视频|