supply of heat exchangers ( plate type ) details as per tender documents , total price for design, manufacture, assembly, inspectionand testing, at manufacturers and / or his sub contractors works, properly packed and painted for transportation and delivery of plate heat exchangers along with mandatory spares complete with all accessories, special tools & tackles ( if any ) , commissioning spares ( if any ) , counter flanges with nuts, bolts, gasketsand coatings ( wherever necessary ) as specified in the technical specification no. pe-ts-475-179-n001 ( rev 00 ) . , break up of s. no. 2above , phes for tg auxs , lumpsum site performance testing of all phes. , mandatory spares for phes for tg auxs , ht plates -20% of each type ( %quantity corresponds to 3 nos. phes )