1)welded pipe 2)SIZE:21.3--1250mm 3)Thickness ... ,410,A53,SA106B,D40,D58,D60,N80,CrB,X42,X46,X52,X56,L245,L290,L360,12Cr1MoWvTIB,J55, ... 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 ...