... /T9711.1 gas and line pipePlace of originTianjin China(Mainland)Applicationoil pipeWelding line typeERWMinimum order quantity20 tonPriceFOB ... welding-Accumlator-Forming-Telepathy Welding-Seam Heat Treatment-Air/Water Cooling-Body/Seam UT-Sizing Straightening- ... test,metallographic examinationFinal product testhydraulic test,on-line and off- line ultrasonic test, tensile test,yeild strength,elogation ...