Standard：ASTM B338/ASME SB338，ASTM B337/ASME SB337，ASTM B861/ASME Sb861
Material：Gr1,Gr2,Gr7,Gr9,Gr12,Gr16 etc.
Type：Seamless tubes，Welded tubes
Size：O.D：6-114.3mm,  W.T：0.4-10mm , L：1000-38000mm