Sui Northern Gas Pipelines Limited invites sealed bids from original manufacturers, authorized distributors, dealers, and suppliers registered with Income Tax and Sales Tax Departments for the supply of S.I Oval Ring items. The tender covers 133 pieces, increased from 89 previously, for use in gas transmission and distribution. Bidders must submit a Pay Order/Demand Draft of Rs 2,500 along with proof of active taxpayer status and a valid professional tax certificate. The tender is open to foreign and local bidders, with documents available for Rs 500. The closing date for submission is 30th December 2025 at 2:30 PM.