supply of set of pipe & pipe fittings for provisionset of pipe & pipe fittings for provision,set of pipe & pipe fittings for provision of trap chamber for collection of coal/dust as per modi fication sheet number: rdso/2017/el/ms/0463,n; dtd.08/09/2017. one set consists of 06 items as follows: 1. b-type t union coupling 3/4th as per clw drg. no. clw/0-3-65-12, qty. 02 nos. 2. elbow (f) 3/4 as per clw drg. no. clw/0-3-65-5, 90 degree equal, qty. 02 nos. 3. m.s. socket 3/4th as per clw drg. no. clw/ ac-124, qty. 02 nos. 4. m.s. dummy plug 3/4th clw drg. no. clw/ac-144, qty. 02 nos. 5. m.s. nipple 3/4t h x 5 inch length as per is-1239 pt.-1, qty. 02 nos. 6. m.s. nipple 3/4th x 4 inch length as per is-1239 pt.-1, qty. 02 nos. [ warranty period: 30 months after the date of delivery ] ] => limited