bids are invited for 1 coupling full 1 inch 6000 class a182 f22 s.w. 2 coupling full 3 / 4 inch 6000 class a182 f22 s.w. 3 forged alloy steel full couplingibr approved and stamped, size- 1 / 2 inch nb x 6000 class, moc- astm a182 f22, ends- socket weld ends, dimensional standard- conforming to asme b 16.11 ( latest edition ) note-1 ) full couplings should be ibr certified and duly stamped.2 ) mtc & original ibr certificate in form iii-c indicating heat & lotnumber as on supplied material should be furnished along with supply. 4 elbow, 1 inch x 6000 class, sw, astm a-182 f22 class 3 dimensions as per ansi b16.11note- 1 ) party to submit mtc from reputed metallurgical laboratory alongwith supply. 5 forged alloy steel elbow, 90 degree, ibr approved and stamped, size- 3 / 4 inch nb x 6000 class, moc- astm a182 f22, ends- socket weld ends, dimensional standard- conforming to asme b 16.11 ( latest edition ) note-1 ) elbows should be ibr certified and duly stamped.2 ) mtc & original ibr certificate in form iii-c indicating heat & lotnumber as on supplied material should be furnished along with supply. 6 coupling full size-1 inch 6000class material-astm a105 gr-ii, dimension as per ansi b-16.11, socket weld 7 coupling full 3 / 4 inch a105 6000 class s.w. 8 coupling-full, material astm a105 grii, class6000 lbs, sw, asa b-16.11, size-1 / 2 inch . 9 elbow 90 deg sw a-105, 1 inch x 6000 class 10 elbow, size-¾ inch 6000class , material- astm a105, 90 deg, short radius dimension as per ansi b-16.11, socket weld total quantity : 420