... quality2.Fast delivery3.Competitive price4.ISO9001,PED and API approvedSpecifications Materialcarbon steel, stainless steel, alloy ... ,BS,GBSurface treatmentblack paint, varnish, rust-proof oil, and hot-dipped galvanizedRange Of ApplicationChemical industry, petroleum ... industry, construction industry, domestic installation and otherCertificatesISO-9001/2000,API,PEDSpecial design available as ...