bids are invited for carbon steel seamless pipe long radius 90 degree elbow size 16 inch nb , short radius 90 degree elbow size 16inch nb , 16 inch x 14inch c.s. reducer , 2 inchnb heavy grade class c seamless gi pipe , 1 and half inch nb class c seamless gi pipe , 1 inchnb heavy grade class c seamless gi pipe , 3 fourth inch nb class c seamless gi pipe , half inch nb class c seamless gi pipe , 2 inch nb gi and npt threaded union , 2 inch nb gi and npt threaded pipe coupling , 2 inchnb to 1.5 inch nb gi coated npt threaded reducer , 2 inch x 2 inch x 1 inch nb gi coated unequal tee npt threaded , 1.5 inch nb gi coated threaded tee , 1.5 inch nb gi coated threaded elbow , 4 inch nb sch 80 carbon steel seamless pipe total quantity : 740