... '' to 72''/DN15-DN2000Angleselbows,bend,tee,cross,reducers,cap,pipe, flanges,socket steel fittings,nippleWTSch5-SchXXS ,such as SCH20, SCH40, STD ... , ANSI,ASME,API5L,DIN,JIS,BS,GBSurface treatmentblack paint, varnish, rust-proof oil, and hot-dipped galvanizedRange Of ApplicationChemical industry, petroleum industry ...