... Test etc), Exterior Size Inspection, Nondestructive Test (Ultrasonic flaw detector, Eddy. current flaw detector), Hydrostatic Test. Seamless steel pipe: ASTM A 53 ... -2, St52 Size: OD 16mm - OD 426mm OCTG PIPE, OIL PIPELINE: Material:J55,K55,N80,P110,L80/Gr.B X42,X46 ...