1)welded pipe 2)SIZE:21.3--1250mm 3)Thickness ... ,JIS-G3444,GB/T3091-2001,etc. CommodityERW steel pipe Specification21.3-457.2mm, 1.8-14.27mm ... 316,3161 LengthAs per client requirement UsagePetrol,gas,water pipe,construction,chimney pot Processing techniqueThreading,coupling,necking,punching . ... as your request provide other steel pipe: cold rolled,hot rolled,hot dipped,ERW pipe,etc. We sincerely hope to ...