1)API Oil Pipe 2)SIZE:21.3--1250mm 3)Thickness:1. ... ,BS1387-85,JIS-G3444,GB/T3091-2001,etc. API Oil Pipe:1)welded square pipe2)SIZE:21.3--1250mm 3 ... A53,BS1387-85,JIS-G3444,GB/T3091-2001,etc. CommodityAPI Oil pipeSpecification21.3-457.2mm, 1.8-14.27mmMaterialQ195,Q215, ... or as per customers requirements BesidesWe also can oil and paint the steel pipeWe can do special oeders as your requestprovide other ...