Sui Northern Gas Pipelines Limited invites sealed bids from original manufacturers, authorized distributors, dealers, and suppliers for the supply of pressure, temperature, and digital pressure calibrators. The tender includes 3 items totaling 7 units, intended for foreign procurement with a bid validity of 90 days. Bidders must be registered with income tax and sales tax departments, possess valid professional tax clearance certificates, and be active taxpayers. Tender documents cost Rs. 2,500 and must be purchased by submitting a pay order or demand draft. The tender closes on 13 January 2026 at 2:30 PM in Lahore.