Hello,we will buy bulk quantities to you with long relationship.We require white silica sand for Steel Foundry with the below specifications.Size: AFS 40-50 (mesh 50-70)SIO2 (Silica): above 99%Clay or powder form: below 0.2%DrySend us your best price in both FOB and CNF, Chennai sea port or Tuticorin sea port.Thank you & Best regards,