Newly made longitudinal seam welding machine. It is can be used to weld large metal pails or stitch ducts. please see its welding videos at https://lnkd.in/f2df8Sm and https://lnkd.in/fHJkCx4
Three kinds of seam welding machines for making air ducts. The first one is the straight seam welding machine, the second is the bent pipe seam welding machine, the third one is the circular seam welding machine. Know more about the machines please contact me by xashjd01@163.com. 😀 😄