... :3.5-25 mm Material: 27SiMn Certification:GB/T19001-200... 1,Accu-roll unit(OD114—273mm. WALL THICKNESS 6-25mm.LENGTH ... ,N80,L80,C90,P110850002Oil casing Pipe, joint materialJ55,N80,L80-1,C90,T95,P110,Q125,9Cr,13Cr2100003Line pipeB,X42~X80200004Transmission fluid ...