supply of op wks stores supply of puf insulated water tanks of 1000 ltrs capacity of olive green / camouflage colour with insulated lid and locking arrangements , make : sintex / patton / polycon or equivalent :- ( a ) inner tanks of three layer made of hdpe / ldpe rational moulded vertical with closed top of is specification and isi marked . ( b ) insulation: puf insulation with polyurethane from of 50 to 75 mm thick with insulation k value 0 . 019 kg / cum-hrs degree centigrade of density minimum 42 kg / cum . ( c ) outer protection layer for puf with frp 3mm layer or as specified by manufactures confirming to is-8008 pt 1 to 6 ) - 2003 . note :- 1 . puf insulated water tank to be one piece moulded . third party ( other than the original manufacturer ) fabrication will not be acceted . 2 . sample of a complete puf insulated water tank and a core cutting of size 1 x 1 of puf tank to be produced to technical evaluation committee at the time of opening of technical bids on date of tender opening to check and confirm with correct technical specifications . if vendor fails to produce the sample at the time of opening of tender , the technical bids in respect of the vendor will be rejected during technical evaluation . 3 . please note that production of sample on the date of opening of tender does not warrant the acceptance of technical bids . the bids will only be accepted in case of the sample fulfills the correct technical specifications . , puf insulated water tank of 500 ltrs capacity of olive green / camouflage colour with insulated lid and locking arrangements , make : sintex / patton / polycon or equivalent :- ( a ) inner tanks of three layer made of hdpe / ldpe rational moulded vertical with closed top of is specification and isi marked . ( b ) insulation: puf insulation with polyurethane from of 50 to 75 mm thick with insulation k value 0 . 019 kg / cum-hrs degree centigrade of density minimum 42 kg / cum . ( c ) outer protection layer for puf with frp 3mm layer or as specified by manufactures confirming to is-8008 pt 1 to 6 ) - 2003 . note :- 1 . puf insulated water tank to be one piece moulded . third party ( other than the original manufacturer ) fabrication will not be acceted . 2 . sample of a complete puf insulated water tank and a core cutting of size 1 x 1 of puf tank to be produced to technical evaluation committee at the time of opening of technical bids on date of tender opening to check and confirm with correct technical specifications . if vendor fails to produce the sample at the time of opening of tender , the technical bids in respect of the vendor will be rejected during technical evaluation . 3 . please note that production of sample on the date of opening of tender does not warrant the acceptance of technical bids . the bids will only be accepted in case of the sample fulfills the correct technical specifications .