... .WALL THICKNESSSch5-Sch160 XS XXS STDSIZE1/2inch to 72inchRANGE OF APPLICATIONChemical industry, petroleum industry, construction industry, domestic installation ... and otherSURFACE TREATMENTShot blasted, rust-proof black oilRADIUS OF CURVATURE1D-10D ANSI,ASME,API5L,DIN,JIS,BS,GBwe ... fittings and steel pipes production equipment in china,all of prodcts are produced by ourself,so we can ...