bids are invited for 21515761 pipe fittings, concentric reducer, ibr quality, seamless, 4-sch40 x 2-sch80 , bw, matl-carbon steel,astm a234 gr.wpb - pipe fittings, concentric reducer, ibr quality, seamless, 4-sch40 x 2-sch80 , bw, matl-carbon steel,astm a234 gr.wpbpipe fittings, concentric reducer ,seamless, 4-sch40 x 2-sch80 , bw, matl-carbon steel,astm a234 gr.wpb of ibr quality, dim. std.to b-16.9. ibr stamping to be done on the conc.reducer & ibr stamping to be circled with painting for easy identification. ibr certificate ( original ) to be attached. , 21502705 pipe fittings,elbow, ibr quality, matl.- cs, dia- 1/2 inch, 90 degree, socket weld, astm a 105, 3000 pound - pipe fittings,elbow, ibr quality, matl.- cs, dia- 1/2 inch, 90 degree, socket weld, astm a 105, 3000 poundpipe fittings, elbow, ibr quality quality, forged, 1/2 inch, rating 3000 , 90 degree ,sw, matl.-carbon steel , astm a 105. pipe fittings, elbow, ibr quality quality, forged, 1/2 inch, rating 3000 , 90 degree ,sw, matl.-carbon steel , astm a 105. , 21502710 pipe fittings, elbow, ibr quality quality, forged, 3/4 inch, rating 3000 , 90 degree ,sw, matl.-carbon steel , astm a 105. - pipe fittings, elbow, ibr quality quality, forged, 3/4 inch, rating 3000 , 90 degree ,sw, matl.-carbon steel , astm a 105.pipe fittings, elbow, forged, 3/4 inch, rating 3000 , 90 degree ,socket weld, matl.-carbon steel ,astm a 105 of ibr quality, dim std-asme b-16.11. ibr stamping to be done on the elbow & ibr stamping to be circled with painting for easy identification. ibr certificate ( original ) to be attached. , 21502720 pipe fittings,elbow, ibr quality, forged, 1 inch, rating 3000 , 90 degree ,sw, matl.-carbon steel , astm a 105. - pipe fittings,elbow, ibr quality, forged, 1 inch, rating 3000 , 90 degree ,sw, matl.-carbon steel , astm a 105.pipe fittings, elbow, forged, 1 inch, rating 3000 , 90 degree ,socket weld, matl.-carbon steel ,astm a 105 of ibr quality,dim std-asme b-16.11. ibr stamping to be done