... ,Seam width no more than 3mm 3,Welding speed no less than 1000mm/min 1,Welding material SS cold-rolled sheet ,thickness ... ,Cutting Accuracy 0.01mm/1000mm(0.05mm SS sheet)6,Welding Length 1000mm-3500mm WE CAN MANUFACTURE KINDS OF EQUIPMENT FOR ... HEATER ACCORDING TO CUSTOMER’S REQUIREMENT AND NEED. straight seam welding machine for inner and outer tanks of solar Water heater