Specific Product Coverage	Philippine National Standard/s (PNS)	Enabling Law	Product Image
Refillable welded stainless-steel cylinders – (1) Test pressure 6 MPa and below; (2) Test Pressure greater than 6 MPa	PNS ISO 18172-1:2014 Gas Cylinders - Refillable welded stainless steel cylinders - Part 1: Test pressure 6 MPa and below   PNS ISO 18172-2:2014 Gas Cylinders - Refillable welded stainless steel cylinders - Part 2: Test Pressure greater than 6 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