alloy hot-rolled 27SiMn tube OD:60-180mm WT:3.5-25 mm Material: 27SiMn Certification:GB/T19001-200... ... 11000002Oil line pipeB,X42~X60(L245~L415)50003high-pressure boiler tube20G50004lower/medium-pressure boiler tube10#,20#,A,B60005Transmission fluid tube10#,20#,Q295 ... of tube320,4101000Total200000FQM continuous rolling unit(OD60—180mm,wall thickness 3.5-25mm,length 6-14.63m)No.Steel typeSteel ...