... , X65, X42, L45StandardGB/T9711.1Length5m-12mUsageline pipe, casing and tubing, fluid pipe, water delivery, heating pipe, power ... -End Beveling-Flatten Test-Seam/End UT-Length Measuring and Weighing-Coating Marketing-StorageEndsbevelled or plain endSurface process1. ... test,metallographic examinationFinal product testhydraulic test,on-line and off- line ultrasonic test, tensile test,yeild strength ...