supply of set of air brake pipe for twin pipe air brake system in bcna wagonset of air brake pipe for twin pipe air brake system in bcna wagon,set of air brake pipe for twin pipe air brake system in bcna wagons. one set consisting of it ems (in nos) given as per annexure bcna enclosed [ warranty period: 30 months after the date of delive ry ] ] sr.section engineer wagon gujarat 172.00 set , set of air brake pipe for twin pipe air brake system in btpn wagons. one set consisting of it ems (in nos) given as per annexure-btpn enclosed. [ warranty period: 30 months after the date of delive ry ] ] sr.section engineer wagon gujarat 100.00 set , set of air brake pipe for twin pipe air brake system in bobyn wagons . one set consisting of items (in nos) given as per annexure bobyn enclosed. [ warranty period: 30 months after the date of del ivery ] ] sr.section engineer wagon gujarat 20.00 set , set of air brake pipe for btfln wagon consisting of 32 nb & 20 nb pipes as per drg.no. rsd- 6315-058, alt-5 or latest, item no. 19,20,21,22,23 & 24 as per annexure btfln to rdso specification no. 0 4-abr-2002 with amendment no. 5 of july 09. material : astm a 312 schedule 40 s gr. tp 304 (erw). [ wa rranty period: 30 months after the date of delivery ] ] sr.section engineer wagon gujarat 50.00 set