Specific Product Coverage	Philippine National Standard/s (PNS)	Enabling Law	Product Image
Refillable seamless steel gas cylinders	PNS ISO 9809-1:2014 Gas cylinders - Refillable seamless steel gas cylinders - Design, construction and testing - Part 1: Quenched and tempered steel cylinders with tensile less than 1100 MPa   PNS ISO 9809-2:2014 Gas cylinders - Refillable seamless steel gas cylinders - Design, construction and testing - Part 2: Quenched and tempered steel cylinders with tensile strength greater than or equal to 1100MPa   PNS ISO 9809-3:2014 Gas cylinders - Refillable seamless steel gas cylinders - Design, construction and testing -Part 3 - Normalized steel cylinders   PNS ISO 9809-4:2014 Gas cylinders - Refillable seamless steel gas cylinders - Design, construction, and testing - Part 4 Stainless steel cylinders with an Rm value of less than 1100 MPa	Department Administrative Order (DAO) No. 22-11, Series of 2022 The New Technical Regulation Concerning The Mandatory Certification of Liquefied Petroleum Gas (LPG) Pressure Vessels, Systems, Services and Ancilliary Products

          This specific product coverage with corresponding version of reference standards shall be mandatory beginning 24 July 2023 as stated in the transitory provision of the DAO 22-11:2022