procurement of miscellaneous mechanical items for clarifiers installed at hpww, phase i.- 1 supply of triplex chain 1 size of 10 feet length. make:-diamond / renold. 2 supply of tyre coupling complete of size tc-011 or equivalent. make:- unique / fenner 3 supply of tyre coupling complete of size tc-013 or equivalent. make:- unique / fenner 4 supply of tyre coupling complete of size tc-016 or equivalent. make:- unique / fenner 5 supply of spare tyre for tyre coupling of size tc-011 or equivalent. make:- unique / fenner 6 supply of spare tyre for tyre coupling of size tc-013 or equivalent. make:- unique / fenner 7 supply of spare tyre for tyre coupling of size tc-016 or equivalent. make:- unique / fenner