... 0.53-2.5m 2,Seam width no more than 3mm 3,Welding speed no less than 1000mm/min ... .5m 2,Seam width no more than 3mm 3,Welding speed no less than 1000mm/min 4,Welding Arc Length no ... more than 5mm 5,Cutting Accuracy 0.01mm/1000mm(0.05mm SS sheet)6,Welding ... ACCORDING TO CUSTOMER’S REQUIREMENT AND NEED. straight seam welding machine for inner and outer tanks of solar Water heater ...