... 85,JIS-G3444,GB/T3091-2001,etc. ERW spiral carbons steel pipe:1)welded square pipe2)SIZE:21.3-- ... BS1387-85,JIS-G3444,GB/T3091-2001,etc. CommodityERW steel pipeSpecification21.3-457.2mm, 1.8-14.27mmMaterialQ195, ... BesidesWe also can oil and paint the steel pipeWe can do special oeders as your requestprovide ... other steel pipe: cold rolled,hot rolled,hot dipped, ...