Kind Attn. Mr.Dinesh Jain,
Dear Sir,
We will shortly start manufacturing Solar Collectors at Chakan, Pune. For our requirement, we wish to get your best offer for the following:
1) 99.9% pure Copper-Copper Fin Riser Assembly with Nalsun selective coating,
2) Absorbitivity > 92%,
3) Emmissivity < 12 %,
4) Copper fins should be ultrasonically welded to copper tube,
5) Fin dimensions (after welding)~ 1930 mm length X 100 mm width X 0.12 mm thickness,
6) Tube dimensions (after welding)~ 1955 mm length X 12.7 mm OD X 0.56 mm wall thickness.
7) Presure rating - The tubes should withstand min. 7kg/sq.cm hydraulic pressure.
8) Quantity requirement ~ 1000 nos. per month initially, thereafter > 2000 nos. per month.
We await your offer.
Note - We are also sending the relevant drawing through ***
Thanks in advance,
Warm regards,
Jagdish Mulimani
SAAI Enterprises,
Chakan-Pune***