1)welded pipe 2)SIZE:21.3--1250mm 3)Thickness: ... T3091-2001,etc.10#,20#,35#,#45,27SiMn,16Mn(Q345B C D E),20G,12Cr1MoVG,12CrMo,T91,P91, ... 304,321,316,3161LengthAs per client requirementUsagePetrol,gas,water pipe,construction,chimney potProcessing techniqueThreading,coupling,necking,punching .etc. ... as your requestprovide other steel pipe: cold rolled,hot rolled,hot dipped,ERW pipe,etc.We sincerely hope to ...