supply of hairpin heat exchangers for cdw unit , supply of hair pin exchangers complete design, engineering, procurement, fabrication, inspection as per asme sec viii div 1, u code stamping, testing, painting, packing, etc. for supply of equipment listed below with tube bundles, separated head, including welded internals and welded external attachments, with supports, anchor bolts and fixing bolts as applicable, all accessories, commissioning spares, special tools and tackles, documentation, etc. for iocl panipat epcm3 project at panipat refinery, india as specified in material requisition. , make up hydrogen spillback cooler , make up spillback cooler