Stainless steel straight seam welding machine 1,Easy install 2,Easy operation 3,Small size Straight seam welding machine is a kind of ... with the straight seam welded steel, H steel welding and so on, are using a large number of straight seam welding machine. ... different size, material of the electric heating kettle’s different weldingrequirements, LiHua’s machine will meet customer demand for different ...