material purchasing paving block at dudhadtq. auragnabad dist. aurangabad , item no . 1:- providing and supplying heavy duty inter locking concrete coloured paving blocks of 80 mm thickness of having a strength of 300 kilogram / sqcm of approved quality and shape on a bed of crshed sand of 25 to 30 mm thick including skirting joints and cleaning etc , item no . 2:- providing and supplying heavy duty inter locking concrete coloured paving blocks of 60 mm thickness of having a strength of 300 kilogram / sqcm of approved quality and shape on a bed of crshed sand of 25 to 30 mm thick including skirting joints and cleaning etc