7 Inch Oil Well Casing Petroleum pipe, Gas and Pipe/Tube Inquire Product Description Inch Oil Well Casing Petroleum pipe, Gas and Pipe/Tube Product Description Material H40.J55.K55.N80.C75.L80.C90.T95.P110.Q125 Wall thickness 5.12mm to 16.13mm length R1(4.86-7.62M). R2(7.62-10.36M). R3(10.36-13Meters) Thread STC.BTC.LTC STANDARD API 5CT Technical Hot Rolled Surface treatment blank oil painting+green/red/white/brown painting Packing 3tons in a bundle packed by steel strip Third party inspection BV_SGS_ISO OD 114.3mm to 508mm Usage oil pipeline, oil natural gas, industrial gas, water transportation