supply of op wks stores ( damteng circle ) :-rcc pipe heavy duty type np-3 600mm dia with coller , cement opc 43 grade packed in hdpe bag each 50 kg wt conforming to is 8112-1989 ( make : birla gold / ambuja / acc / jk / dalmia / ultratech ) , coarse sand free from vegetation , coarse aggregate 20mm graded . , coarse aggregate 40mm graded . , hard core 63-90 mm , wooden plank for shuttering ii class wood of size 3 . 00x0 . 3mx0 . 026m , pvc pipes 75 mm each 3 mtr long ( make : prince / finolex / supreme ) , stone for rr massonry less than 6 , mild steel bars of size 10 mm and above dia conforming to is 432 ( part i ) 1982 ( make : tata / sail / jsw ) , moorum bajri