Procurement Of 1 Gasket For Flange Welded Joint Pipe To Equipment For 20 Mm Nb Pipe To Drawing No. Rdso/wd-83062-s-7, Alt.-6, Item -1 28 Nos. 2 Gasket For 20 Mm Nb Pipe Special To Drawing No. Rdso/wd-83062-s-7, Alt.-6, Item -1 02 Nos..