bids are invited for supply and installation 316l 1x1 cylinder nitrogen gas manifolds systems , supply and installation 316l 1x1 cylinder caorbondioxide gas manifolds systems , supply and installation 316l of one cylinder argon gas manifolds systems , supply and installation of 316l stainless steel seamless half inch tubing with required fittings supports clamps , supply and installation of half inch compression end ss 316l ball valve of 250 bar rated , analog 316 ss 4 inch dial vacuum gauge for nitrogen, carbon dioxide and carbogen gas , vacuum trap and nrv , supply and installation of ss 316l secondary regulator for nitorgen at each point of use , supply and installation of ss 316l secondary regulator for argon at each point of use , supply and installation of ss 316l secondary regulator for carbon dioxide at each point of use , disconnection of existing 1 inch metal gas pipe line , 4 inch pressure guages for co2 n2 and argon each 2 , installtion testing termination and commissioning of gas line with all joints orbital welding , supply and instalation ptfe ss braided cylinder onnection hose for carbon dioxide nitrogen and carbogen gas manifold system total quantity : 128