... kinds of conventional weapons:the barrel, shells and so on.Structural Steel PipeCr5Mo, Cr9Mo, 15CrMo, 35CrMo, 12Cr1MoV, 10CrMo910, A335P11, A335P91, ... N80, API P110GB9948-2000114-273mm, 4-13mmWall lining for oil wellsERW Steel PipeQ195-Q345ASTM, GB0.8-12mm,19-275mmMainly used ... equipment,telecommunication tubes as well as green house tubes for different planting and breeding business.Line PipeAPI J55- ...