丝袜美腿护士办公室在线观看,国产综合区,欧美亚洲一级片,久久综久久美利坚合众国,a在线免费视频,精品欧美成人高清视频在线观看,交视频在线观看国产网站

DMM50 submerged arc welding machine (double wire) is a dual-purpose welding equipment specially designed for welding "H" or "T" steel and welding box beams after replacing the weld tracking frame. advantage:

1. One machine with dual purposes, can weld H-shaped steel and box beams, easy to operate, and large range of welding seam tracking ;

2. Using heavy-duty seam tracking device, the welding seam is more uniform and smooth;

3. Efficient flux recovery system can recover and separate the flux more effectively, and can be reused;

4. Highly automatic, reliable work status, simple structure, easy for operation and maintenance;

5. The drag chain is placed in longitudinally, and the welding machine and the workpiece holder are directly connected with a large-section cable, which effectively improves the welding quality;

6. Double wire and double arc, forming at once, with the advantages of fast speed, good quality and beautiful welding seam.