Sui Northern Gas Pipelines Limited (SNGPL) invites sealed bids from original manufacturers, authorized distributors, dealers, and suppliers registered with Income Tax and Sales Tax Departments. The procurement is for the supply of Long Radius Elbow 4" Diameter, quantity 3,000 units. Bidders must possess valid Professional Tax Clearance Certificates and be active taxpayers with the Federal Board of Revenue. Tender documents are available upon payment of Rs 2,500 and proof of tax compliance. The tender is foreign/international in nature, and bidders are requested to upload documents on the PPRA website as per instructions.