tender for set of 3/4 gi pipe. size:- id=20mm od=26mm, in length of following sizes (01)36=02 nos, both side 01 thread with elbow = 04 nos (02) 12=02 nos one side 1 thread(03) 69=01 no (04) 21=02 nos is 1239a, (each set consist of 04 item comprising 07 nos gipipe &04 nos elbow).