... ,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 ... TANK AND OUTER TANK OF SOLAR WATER HEATER ACCORDING TO CUSTOMER’S REQUIREMENT AND NEED. straight seam welding machine for inner and ...