Tender For supply of carbon and alloy steel pipe fitting d d - sr. no. 1 cs reducer eccentric seamless bw size 150 nb x 100 nb x 10. 97 mm thk conforming to asme b 16. 9 astm sa 234 gr wpb and attached npcil specification pc-m-599. , sr. no. 2 cs reducer concentric seamless bw size 250 nb x 150 nb x 15. 09 mm thk conforming to asme b 16. 9 astm sa 420 wpl6 and attached npcil specification pc-m288. , sr. no. 3 cs reducer concentric seamless bw size 150 nb x 80 nb x 10. 97 mm thk conforming to asme b 16. 9 astm sa 420 wpl6 and attached npcil specification pc-m-288. , sr. no. 4 alloy steel half coupling or sockolet sw size 450nb x 50nb asme b16. 11 class 3000 conforming to asme b16. 11 astm sa 182 gr. f22 and attached npcil specification pc-m-309. , sr. no. 5 alloy steel half coupling or sockolet sw size 750nb x 50nb asme b16. 11 class 3000 conforming to asme b16. 11 astm sa 182 gr. f22 and attached npcil specification pc-m-309. , sr. no. 6 cs pipe seamless bw size 250 nb x 18. 26 mm thk conforming to asme b36. 10 astm sa 333 gr. 6 and attached npcil specification pc-m-288.