Implementing Guidelines for the Issuance of PS Certification Mark for BI/GI Steel Pipes

Implementing Guidelines for the Issuance of Philippine Standard (PS) Certification Mark License for Black Iron and Galvanized Iiron Steel Pipes covered by PNS 26:1992, Steel - Black and hot-dipped zinc coated (galvanized) longitudinally welded steel pipes (for ordinary use) - Specification