| Product | Philippine National Standard/s (PNS) | Enabling Law | Product Image |
| Steel tubes for steel frame structure | PNS 2145:2020 Steel – Black and galvanized longitudinally welded lightweight steel tubes - Specification |
Department Administrative Order (DAO) No. 19-16, Series of 2019 Supplemental Guidelines for the Implementation of DAO 19-16, Series of 2019
Supplemental Guidelines for the Implementation of DAO 19-16, Series of 2019
Transitory Provision for Mandatory Product Certification and Market Monitoring and Enforcement of Black and Galvanized Longitudinally Welded Lightweight Steel Tubes under MC 22-14, Series of 2022
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