supply of set of air brake feed pipes with flanges and socket ( welded assy. ) for bcn wagons consisting of following item as per rdso drawing & other technical requirements confirming to rdso specn. no. 04-abr- 2002, read with all amendment, latest amendt. no. 8 of sept.2016, material specn. of pipes as under :- ( 1 ) pipe 32 nb - seamless to is: 1239 ( part-i ) heavy grade or astm a-106 gr.a., ( 2 ) pipe 20 nb stainless steel to astm-a312 schedule 40 s gr. tp304 ( erw ) ., ( 3 ) flanges and socket:- ( i ) stainless steel to is: 6911-1992, x04 gr. 19 ni9 304 si for branch pipe 20nb., ( ii ) is: 2062-2011, amnd.1 of nov.2012 gr. e250a for feed pipe 32nb. as details of set for bcn wagons qty.=100 set. sr.no. ( 1 ) description-pipe 32 nb, drawing-wd-84014-s-8, alt no. 6, item nos.-06, 14 & 15, qty. / set-item no.06-2 nos. item no. 14 & 15-2 nos. each. srno. ( 2 ) description- pipe 32 nb, drawing-wd-84014-s8, alt. no.6, item nos.-04, 14, 15 & 16, qty. / set-item no.04-1 nos. item no.14, 15 & 16-1 nos. each, sr.no. ( 3 ) description- pipe 32 nb, drawing-wd-84014-s-8, alt. no.6, item nos- 02, 14, 15 & 16, qty. / set- item no.02-2 nos. item no.14, 15 & 16-2 nos. each sr.no. ( 4 ) description-pipe 20 nb, drawing-wd-84014-s-8, alt. no.6, item nos.-12, 17, 18, 19 & 20, qty. / set-item no.12-1 nos. item no. 17, 18, 19 & 20-1 nos. each., sr.no. ( 5 ) description-pipe 20 nb, drawing-wd-84014-s-8, alt.no.6, item nos.- 11, 17 & 18, qty / set-item no.11-1 nos. item no. 17 & 18-2 nos. each., sr.no. ( 6 ) description-pipe 20nb, drawing-wd- 84014-s-8, alt no.6, item nos-08, 17 & 18, qty. / set-item no.08-1 nos. item no. 17 & 18-2 nos. each., sr.no. ( 7 ) description-bracket for 20 nb, drawing-wd-84014-s-9, alt. no-7, item nos-06. qty. / set-01 nos., sr.no. ( 8 ) description-bracket for 32 nb, drawing-wd-84014-s-9, alt no.7, item nos.-02, qty / set-04 nos. sr.no. ( 9 ) description-bracket for bp & fp, drawing-wd-84014-s-9, alt. no.7, item no.s-01, qty / set-02 nos. socket & flanges to rdso drg. no. wd-83062-s-07, alt.6 & rdso drg.no.wd-83062-s-06 alt.4. [ warranty period: 30 months after the date of delivery ]