... steel pipe factory Linzhou Fengbao Pipe Co.,Ltd. as a seamless pipe manufacturer in the worldwide marketplace specializes in production ... end L245,L290,L320,L360,L390,L415PSL 1:A,B,X42,X46,X52 B Structure seamless pipe20#,35#,45#,Q345,Q345B,Q345C ... as multi-inspection machine, eddy current inspection, ultrasonic flaw detection and also equipment for impact test, tensile test, and metallographic analysis ...