natural gas oil pipe,duplex pipe,seamless pipe 1.OD:33-610mm 2.WT:1.0-40mm 3.Length:Fixed ... 5.8m or 11.8m or 5-14m Random Natural gas ... it is the favorable choice for oil and gas transportation.Natural gas oil pipe,duplex pipe,seamless pipe 1.OD ... dimensional testing, visual inspection, nondestructive inspection; SGS/BV natural gas oil pipe,duplex pipe,seamless pipe