... --XXS4.Standard:ASME,ASTM,JIS,DIN,EN5.Painted: black,varnish,antirust oil, hot-dipped galvanizedAdvantage1.Top quality2.Fast delivery3.Competitive price4.ISO9001 ... ,API5L,DIN,JIS,BS,GBSurface treatmentblack paint, varnish, rust-proof oil, and hot-dipped galvanizedRange Of ApplicationChemical industry, petroleum industry, construction ...