supply of pipe 20nb for bobrn wagon etc.pipe 20nb for bobrn wagon etc.,pipe 20nb for bobrn wagon as per rdsos drg. no. wd - 91071 - s - 75, alt no. 4, con sisting of following items as listed below :- 1). item no. 11 with both ends item - 18 & 19. 2). item no. 12 with one end item - 18 & 19 and other end item - 20 & 21 including fitted with item - 22 ( tee 20x2 0x15 mm ). and pipe will be stainless steel to astm - a312 schedule 40 s gr. tp 304 (erw). (as per r dsos letter no. mw/apb dtd.22.05.2020). [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]