In downstream oil and gas, LPG: an identification number permanently marked on the collar or footring of LPG cylinders. This is used to identify production batch for quality control and traceability purposes [Section 3.38, Rule 3, DTI Department Administrative Order No. 22-11, Series of 2022, The New Technical Regulation Concerning the Mandatory Certification of Liquefied Petroleum Gas (LPG) Pressure Vessels, Systems, Services and Ancillary Products]
Note: This term is alternatively referred to as Batch No., Serial No., and Code.