... Linzhou Fengbao Pipe Co.,Ltd. as a seamless pipe manufacturer in the worldwide marketplace specializes in production of casing ... test, and metallographic analysis test. Before sold in the market, each of the products must be ... :4-1/2”,5”,5-1/2”,6-5/8”,7”,7-5/8”8-5 ... BTC),NUE/EUELength RangeR1,R2,R3PackageAccording to customers’ requirementsLength:6 mtr & 12 mtr (with tolerances), SRL & DRLApplicable ...