... 4000mmWall Thickness1.5mm---50mmLengthRandom or fixedUsageLine Pipe,Casing And Tubing,Fluid Pipe, Water Delievery,Heating Pipe,Power ... Test→Uncoiling→Strip leveling →End Cutting→End Shearing and Welding→Accumlator→Forming→Telepathy Welding→Seam Heat Treatment ... Metallographic ExaminationFinal Product TestHydraulic Test, On-line and off-line Ultrasonic Test,Tensile Test ,Yeild Strength,Elogation,Hardness ...