Flange Welded Joint (Pipe To Equipment) Item No. 1 To 4. Nominal Pipe Size-25Mm Nb . Confirming To Rdso Drg No. Wd-83062-S-07, Alt-7 Or Latest. Material Of Items 2 To 4 Shall Be Confirming To Stainless Steel To Is:6911-1992/2004. Grade Designation X04Cr19Ni9 (Is-304S1). It Em Shall Be Supplied Without Burrs Or Sharp Edges & Properly Machined. [ Warranty Period: 3 0 Months After The Date Of Delivery ] ]