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, consisti ng 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 20x20x15 mm ) . and pipe will be stainless steel to astm - a312 schedule 40 s gr. tp 304 ( erw ) . ( as per rdsos letter no. mw / apb dtd.22.0 5.2020 ) . [ warranty period: 30 months after the date of delivery ] dy.cmm / jamalpur, er bihar 65.00 set