bids are invited for custom bid for services - fabrication of carbon steel ferrous pipe size up to 32nb , custom bid for services - fabrication of 90 10 or 70 30 cupro nickel or copper or stainless steel non ferrous pipe size up to 32nb , custom bid for services - fabrication of jig or templet using 20nb and 25nb seamed carbon steel pipe , custom bid for services - installation pipe spool 08 nb to 250 nb carbon steel ferrous pipes , custom bid for services - installation of pipe spool 08 nb to 250 nb 90 10 or 70 30 cupro nickel copper stainless steel non ferrous pipe , custom bid for services - removal and re fitment of pipe spool carbon steel ferrous pipe , custom bid for services - removal and re fitment of 90 10 or 70 30 cupro nickel or copper or stainless steel non ferrous pipes , custom bid for services - installation of system valves size 20nb to 50nb , custom bid for services - installation of system valves size 65nb to 100nb , custom bid for services - installation of system valves size 125nb to 250nb , custom bid for services - installation inspection ii of pipes , custom bid for services - pressure testing of pipes size up to 32nb , custom bid for services - pressure testing of pipes size 40nb to 100nb , custom bid for services - pressure testing of pipes size 125nb and above total quantity :