bids are invited for repair, maintenance, and installation of plant/ systems/equipments (version 2) - defense; air charging trolley with regulator; service provider; (a) replacement of cylinder to manifold hose length- 1.1 mtr qty -01. (b) replacement of manifold to aircraft delivery hose length-15 mtr qty -01 (c) all replacement of new hoses (as per sample) are black in colour, isi mark, dia of 3/8 inch and pressure holding capacity 6000 psi with test certificate. hose material made of teflon braided, stainless steel material wire meshed type with both side stainless steel end connector and its adopter made of stainless steel external threaded (male type) require to connect manifold and cylinder. (d) to do complete fitting.