supply of foundry coke, max. ash-20 percent, max. moisture-4 percent, size: 1. 75 to 100 sqr.mm - 25percent max. 2. 100 to 150 sqr.mm - 75 percent min. foundry coke (fc) to is: 439/1989, table-1, sl. no.ii(special grade). (supply and packing of coke to be done in gunny bags).