supply of ms surge tank in the store of santipur (a-i) sub-division and krishnagar-i (a-i) sub-division and supply of 80 mm dia ms surge pipe in the store of krishnagar-i (a-i) of krishnagar-i (a-i) sub-division under krishnagar - ii (a-i) division. supply of ms surge tank in the store of santipur (a-i) sub-division and krishnagar-i (a-i) sub-division and supply of 80 mm dia ms surge pipe in the store of krishnagar-i (a-i) sub-division under krishnagar - ii (a-i) division. , ms surge tank as per drawing (annexure-h). the body of which made of 3 mm thick ms sheet and top and bottom cover are made of 5 mm thick ms sheet welded with the body and strengthened with ribs. etc. all joints must be electrically welded to a leak-proof condition and joints must be capable of withstanding pressure of 50 psi. the surge tank shuld be fitted with all accessories as specified in the drawing. entire surge tank is to be painted both inside and out side over a coat of priming in the store of santipur (a-i) sub-division. , ms surge tank as per drawing (annexure-h). the body of which made of 3 mm thick ms sheet and top and bottom cover are made of 5 mm thick ms sheet welded with the body and strengthened with ribs. etc. all joints must be electrically welded to a leak-proof condition and joints must be capable of withstanding pressure of 50 psi. the surge tank shuld be fitted with all accessories as specified in the drawing. entire surge tank is to be painted both inside and out side over a coat of priming in the store of krishnagar-i (a-i) sub-division. , 80 mm dia ms surge pipe of 3 metre long made from 80 mm nb erw pipe conforming to is 1234 (pt-1),2004, medium quality one end 80 mm dia flange welded of 10 mm thickness conforming to is 6392/71, table-17, in the store of krishnagar-i (a-i) sub-division.