This tender is for the supply of chemical silicon carbide grit #320-F (acid wash) in 25 kg bags as per specified standards. The full order quantity is 4000 kilograms, to be delivered within 60 days after receipt of purchase order. Samples must be provided by bidders upon request. The procurement follows the PPRA rules 2004 under a single stage one envelope bidding procedure. Bidders must be active in the FBR Active Tax Payer List and submit sealed quotations in PKR. The tender documents are available for purchase at the SSGC Head Office, Karachi, and bidders must attach the original token slip with their sealed envelope submissions.