annual rate contract for supply of gi pipe for cgd projects in iocl gas annual rate contract for supply of gi pipe for cgd projects in iocl gas , supply of gi pipes with polyster powder coating of size, schedule & specification indicated below: pipes shall confirm is: 1239 ( part-i ) heavy duty, continuous welded with min. tensile strength of 30 kgf / sq.mm & galvanized protective coating to protect from corrosion or by electro galvanzing and coated with polyster powder coating with plain end of following sizes as per technical specification of this tender. , gi pipe 15mm dia, 3.2 mm wt, powder coated, heavy class p / e, plain end , gi pipe 20mm dia, 3.2 mm wt, powder coated, heavy class p / e, plain end , gi pipe 25mm dia, 4.0 mm wt, powder coated, heavy class p / e, plain end , gi pipe 40mm dia, 4.0 mm wt, powder coated, heavy class p / e, plain end