How to tell a compliant LPG cylinder: 7 quick checks
Seven checks for dealers and users to spot a compliant LPG cylinder: stamped data, welds, body, paint, valve, tare weight and the records that come with it.
Read articleA gas cylinder passes through many hands: the cylinder manufacturer, the filling plant, the dealer, the user and then back round again. LPG cylinder traceability is the ability to know who made a specific cylinder, which batch it belongs to, when it was inspected and which company filled it. It is the foundation for quality management, handling incidents and fighting counterfeits and imitations.
Where is the traceability information on a gas cylinder?
- Serial number: stamped on the body or neck of the cylinder, a unique number for each cylinder.
- Manufacturer’s name, year of manufacture, batch code: embossed when the cylinder is made.
- Inspection date: stamped or marked on the cylinder and updated after each periodic inspection.
- Technical data: capacity, tare weight, test pressure.
- Seal, anti-counterfeit label, QR code: applied by the gas brand or filling plant when the cylinder is dispatched.
The list of serial numbers for each batch is part of the LPG cylinder inspection records that the manufacturer delivers with every batch.
The benefits of traceability
For dealers and gas brands
- Know exactly which cylinder is with which customer and which cylinders are approaching their inspection date — see LPG cylinder management for dealers.
- Quickly narrow down the problem when a fault is found in a batch of cylinders or a round of filling.
- Protect the brand against unauthorised filling and counterfeiting.
For users
- Peace of mind that the cylinder has a clear origin, is within its inspection date and was filled at the right place.
- Information to report with if the cylinder has a problem.
QR labels and anti-counterfeit labels on gas cylinders
Many brands apply a label with a QR code or a unique code; by scanning or entering the code, users can view the cylinder’s details, filling date and distributor. When ordering cylinders under your own brand, you can ask the manufacturer to leave a suitable position and format for the label — see ordering private-label LPG cylinders.
Note: a label is only meaningful when the system behind it is kept fully up to date; the serial number stamped on the cylinder remains the most durable means of identification.
How to check a gas cylinder yourself before accepting it
- Look at the brand: the cylinder is the brand the dealer sells.
- Check that the seal on the valve is intact.
- Check that the inspection date on the cylinder is still valid.
- Scan the QR code (if there is one) and compare the information.
- Look at the cylinder: no dents, heavy rust or scorching — see can you use a rusty or dented gas cylinder.
- Weigh the cylinder if you suspect it has been underfilled.
Frequently asked questions
Does the serial number on a gas cylinder ever change?
No. The serial number stays with the cylinder for its whole life; at each periodic inspection the inspection date is updated but the serial number remains the same.
Is a cylinder without a QR label a counterfeit?
Not necessarily. Not every brand uses QR labels; check the seal, the brand and the inspection date, and buy from a reputable dealer.
Does the cylinder manufacturer provide a list of serial numbers?
Yes. VietnhatGas delivers a list of serial numbers for each batch together with the inspection report and the factory inspection sheet.
Need 12kg or 45kg cylinders with serial numbers, batch codes and full documentation for traceability? Send a request on our quotation page.
Written by the VietnhatGas technical and sales team — a batch manufacturer of LPG cylinders. This content is for reference; regulations and standards may change, so please check the current texts.
