The gas cylinder import procedure is a category of pressure equipment that requires businesses to handle two layers of regulation in parallel: standard customs and tax regulations, and technical safety regulations for pressure equipment — the latter not applicable to most other industrial goods. This is the biggest difference that leaves many first-time importers of this product caught off guard once the goods have already arrived at port, whether the cylinders are for industrial gas (oxygen, nitrogen, argon, CO2, acetylene) or fuel gas (LPG).
An important distinction should be made clear: this article covers empty gas cylinder shells (industrial cylinders, LPG cylinders, gas tanks/storage vessels) — not the gas contained inside. If importing finished LPG gas, businesses must additionally meet the gas trading conditions under Decree 87/2018/ND-CP and apply for a Certificate of Eligibility for Gas Import-Export from the Ministry of Industry and Trade — this scope is not covered in the content below.
In this article, 3W Logistics presents the complete gas cylinder import procedure under the latest legal regulations and tariff schedule — from legal conditions, HS codes, tax calculation, and required documentation, through the step-by-step process and practical risks, from the perspective of a forwarder experienced in handling imported pressure equipment.
1. Legal conditions for importing gas cylinders
Gas cylinders are not on the list of prohibited import goods, but they do fall under the Group 2 goods list of items with potential safety hazards due to their nature as pressure equipment — this is what makes the gas cylinder import procedure considerably more complex than for ordinary packaging or containers, whether the cylinders are industrial gas cylinders or household fuel gas cylinders.
| Condition | Detailed Content |
|---|---|
| State quality inspection | Gas cylinders fall under Group 2 goods managed by the Ministry of Science and Technology, requiring mandatory registration for state quality inspection upon import before clearance |
| Technical safety inspection | For cylinders/vessels with a working pressure above 0.7 bar (including oxygen, nitrogen, argon, CO2, acetylene, and LPG cylinders), mandatory occupational technical safety inspection under Decree 44/2016/ND-CP (as amended by Decree 140/2018/ND-CP) is required before the goods are put into circulation or use |
| Product conformity | Depending on the type of gas contained inside, gas cylinders must declare conformity under the corresponding national technical regulation, meeting the design and manufacturing standards TCVN 6153, TCVN 6155, TCVN 6156, and TCVN 8366:2010 |
| Product labeling | A Vietnamese supplementary label under Decree 43/2017/ND-CP and 111/2021/ND-CP: product name, capacity, working pressure, manufacturing material, origin, and importer |
Practical note: Quite a few businesses confuse importing empty (unfilled) gas cylinder shells with importing the finished gas product inside. Technically speaking, the gas cylinder import procedure for empty cylinders does not require a gas trading license as specified under Decree 87/2018/ND-CP (which applies specifically to finished LPG gas), but in exchange it requires fully completing the pressure equipment safety inspection and Group 2 goods quality inspection steps — two procedures that businesses easily overlook, mistakenly believing that only a standard customs declaration is needed, whether the goods are industrial gas cylinders or household fuel gas cylinders.
2. HS code and import tax for gas cylinders
Depending on the construction material, capacity, and intended use, gas cylinders are classified under several different HS code headings in the Import-Export Tariff Schedule, most commonly heading 73.11 for cylinders made of iron or steel.
| HS Code | Detailed Description | Import Tax (MFN) |
|---|---|---|
| 73.11 — Containers for compressed or liquefied gas, of iron or steel | ||
| 73110011 | Industrial compressed gas cylinders (oxygen, nitrogen, argon, CO2), capacity under 30 liters | 0–3% |
| 73110023 | Seamless gas cylinders for liquefied petroleum gas (LPG), capacity from 30 liters to under 60 liters | 3–5% |
| 73110024 | Seamless gas cylinders for liquefied petroleum gas (LPG), capacity from 60 liters to under 90 liters | 3–5% |
| 73110025 | Seamless gas cylinders for liquefied petroleum gas (LPG), capacity from 90 liters to 110 liters — the common 12 kg and 45 kg LPG cylinder type | 3–5% |
| 73110029 | Other compressed/liquefied gas cylinders or containers, capacity above 110 liters (acetylene cylinders, industrial welding gas) | 3–5% |
| 73.09 — Reservoirs, tanks, vats and similar containers of iron or steel, capacity above 300 liters | ||
| 73090011 | Specialized liquefied/industrial gas storage tanks, with lining or thermal insulation | 0% |
| 73090019 | Other large-capacity tanks/vessels for liquefied gas or refrigerated gas | 0% |
| 39.23 — Articles of plastics used for the conveyance or packing of goods | ||
| 39233020 | Multi-layer fiberglass-reinforced (composite) cylinders, used for compressed or liquefied gas | 0–3% |
Important note on HS codes and tax: For goods with a valid Certificate of Origin (C/O) from countries with an FTA with Vietnam (ASEAN, South Korea, China, EU…), the import tax on gas cylinders under heading 73.11 is typically reduced to 0%, instead of the standard MFN rate of 3-5%. Large-capacity storage tanks (heading 73.09) mostly already enjoy a 0% MFN rate, since Vietnam does not yet manufacture this category of equipment domestically. Regarding VAT, the current rate of 8% applies through December 31, 2026 under Decree 174/2025/ND-CP; after that date, businesses should check for updated policy, as the rate may revert to the standard 10%. In the gas cylinder import procedure, correctly determining capacity, material, and intended use to select the appropriate 8-digit subheading is a key factor in avoiding retroactive tax collection after clearance.
3. Documentation for the gas cylinder import procedure
Because gas cylinders are Group 2 goods subject to quality inspection, the documentation set for the gas cylinder import procedure is considerably more extensive than for ordinary goods, per Circular 38/2015/TT-BTC (as amended by Circular 39/2018/TT-BTC).
| Document | When to Prepare | Important Note |
|---|---|---|
| Sales Contract | Before deposit | Clearly state capacity, design pressure, gas type used, manufacturing standard, and terms for providing the C/O and technical documentation |
| Commercial Invoice & Packing List | Before goods are shipped | Fully state capacity and quantity for each cylinder/vessel type |
| Bill of Lading | After goods are loaded onto the vessel | Gas cylinders are typically shipped in dry containers and need to be securely lashed to prevent impact deforming the cylinder body |
| Mill Certificate | Before goods are shipped | Proves the material and wall thickness meet the design standard, and serves as the basis for the domestic inspection body’s cross-check |
| State quality inspection registration | Before or at the time the declaration is filed | Submitted at the Sub-Department of Standards, Metrology and Quality, or via the National Single Window Portal; mandatory for Group 2 goods |
| C/O (Certificate of Origin) | Before goods are shipped | Needed to benefit from preferential FTA import tax instead of the 3-5% MFN rate |
| Electronic customs declaration (VNACCS/VCIS) | Once documentation is complete | Declare the correct HS code under heading 73.11 or 73.09, together with the quality inspection registration number |
4. Step-by-step gas cylinder import procedure
Step 1: Check technical specifications and determine the HS code
Determine the capacity, working pressure, gas type used, and construction material (steel, composite) of the gas cylinder, and work with the supplier to obtain complete technical documentation, from which the correct HS code — heading 73.11, 73.09, or 39.23 — can be determined.
Step 2: Negotiate the contract and prepare technical documentation
Sign the gas cylinder purchase contract, clearly stating capacity, gas type used, and the applicable manufacturing standard, and require the supplier to provide a Mill Certificate together with a C/O if preferential tax is needed.
Step 3: Register for state quality inspection before goods arrive
Submit the quality inspection registration at the Sub-Department of Standards, Metrology and Quality or via the National Single Window Portal, as this is a mandatory step for Group 2 goods and needs to be carried out in parallel with the sea transport time so as not to delay clearance.
Step 4: Transport goods to a Vietnamese port
Gas cylinders are typically shipped in standard dry containers; secure lashing is required to prevent impact causing dents or affecting the pressure-bearing structure of the cylinder body during long-distance transport.
Step 5: Sampling, inspection, and customs declaration
Once the goods arrive at port, a designated inspection/conformity assessment body conducts a physical inspection cross-checked against the technical documentation. In parallel, file the VNACCS/VCIS declaration with the full HS code and quality inspection registration number.
Step 6: Receive the conformity notice, clear customs, and apply labeling
After receiving a passing “State Quality Inspection Result Notice,” submit it to customs to complete clearance, apply the Vietnamese supplementary label, and receive the goods at the warehouse. Keep complete documentation and inspection records on file to support post-clearance inspection.
5. How to calculate import tax on gas cylinders
Gas cylinders are not subject to special consumption tax, only import tax and VAT. As an example, for a shipment of 50-liter industrial gas cylinders imported from South Korea (HS code 73110029) with a CIF price of VND 400 million, comparing the case with and without a C/O:
| Tax / Cost Item | Without C/O (ordinary rate 5%) | With AKFTA C/O / preferential rate (0%) |
|---|---|---|
| CIF price | VND 400,000,000 | VND 400,000,000 |
| Import tax | 5% × 400M = VND 20,000,000 | 0% × 400M = VND 0 |
| VAT (8%, applicable through end of 2026) | 8% × (400+20)M = VND 33,600,000 | 8% × (400+0)M = VND 32,000,000 |
| Total tax payable | VND 53,600,000 (~53.6 million) | VND 32,000,000 (~32 million) |
| Savings with C/O | ~VND 21,600,000 — not including technical safety inspection costs and the state quality inspection fee; businesses should budget for these additionally when planning import costs. | |
From 3W Logistics’ practical experience: Unlike many industrial goods categories where only the HS code and tax need attention, the most common mistake we see in the gas cylinder import procedure is businesses registering for state quality inspection far too late — often only starting the process once the goods have already arrived at port, causing the shipment to sit in container and yard storage for many days while waiting for the inspection body to take samples and issue the certificate. This holds true for both industrial gas cylinders and household fuel gas cylinders. Preparing complete technical documentation and registering for quality inspection in parallel with the sea transport time can significantly shorten clearance time. — Ms. Apple, CCO, 3W Logistics
6. Common risks in the gas cylinder import procedure
| Risk | Manifestation | Prevention |
|---|---|---|
| Overlooking quality inspection registration | The business mistakenly believes only a standard customs declaration is needed, unaware that gas cylinders are Group 2 goods requiring mandatory quality inspection | Clearly identify the product as Group 2 goods right from the contract negotiation stage, and register for quality inspection early via the National Single Window Portal |
| Misapplying the HS code among the 73.11 subheadings | Confusion between subheadings based on capacity and gas type used — customs reclassifies the goods and retroactively collects the tax difference under Decree 128/2020/ND-CP | Request detailed technical documentation from the manufacturer before declaration; consult a forwarder experienced with the pressure equipment goods category |
| Cylinder body deformation during transport | Impact or denting of the cylinder body causes the pressure-bearing structure to no longer meet standard, resulting in rejection during inspection | Require the supplier to lash goods securely and package to international shipping standards, and purchase adequate cargo insurance |
| Confusing empty cylinder import with gas trading | Mistakenly applying the conditions of Decree 87/2018/ND-CP (LPG gas trading) to a shipment that only imports empty cylinder shells, or vice versa | Clearly determine from the start whether the shipment is empty cylinder shells or finished gas product, to apply the correct set of legal regulations |
| Product label missing mandatory information | Missing pressure specifications, capacity, gas type used, or origin on the Vietnamese supplementary label — customs holds the goods and requires supplementary labeling at port | Prepare a complete supplementary label sample under Decree 43/2017/ND-CP and 111/2021/ND-CP before the goods arrive at port |
FAQ – Frequently asked questions about the gas cylinder import procedure
Question 1: What documents are required for the gas cylinder import procedure?
The complete documentation set for the gas cylinder import procedure includes: Sales Contract; Commercial Invoice and Packing List; Bill of Lading; Mill Certificate; C/O (if needed); state quality inspection registration; and electronic customs declaration (VNACCS/VCIS). After inspection is passed, the business submits the “State Quality Inspection Result Notice” to complete clearance.
Question 2: Are gas cylinders required to undergo technical safety inspection?
Yes. Because gas cylinders are pressure equipment with a working pressure typically above 0.7 bar, technical safety inspection under Decree 44/2016/ND-CP is mandatory before the goods are put into circulation or use — applying to both industrial gas cylinders and fuel gas cylinders. This is the biggest difference that makes the gas cylinder import procedure significantly more complex than many other ordinary industrial goods categories.
Question 3: How many types of tax must be paid when importing gas cylinders?
Gas cylinders are subject to only two layers of tax: (1) Import tax calculated on the CIF price, with a standard MFN rate of 3-5% under heading 73.11, potentially reduced to 0% with a valid C/O; (2) VAT, currently 8% and applicable through December 31, 2026 under Decree 174/2025/ND-CP. Gas cylinders are not subject to special consumption tax.
Question 4: How long does the gas cylinder import procedure take?
The total time from signing the contract to goods arriving at the warehouse is typically 25-40 days, longer than for ordinary goods due to the wait for state quality inspection. Of this: shipping from Asia takes 10-15 days, from Europe 25-35 days; inspection and quality checking takes 5-10 working days depending on the designated inspection body.
How does 3W Logistics support the gas cylinder import procedure?
With experience handling a wide range of imported pressure equipment — from industrial gas cylinders to liquefied gas storage tanks — and registration as an OTI-NVOCC with an FMC Bond (Federal Maritime Commission) in the United States, 3W Logistics provides end-to-end service for businesses on the gas cylinder import procedure — from HS code determination consulting through to goods arriving at the distribution warehouse.
Full-package logistics services at 3W Logistics:
- Consulting on accurate HS code determination based on capacity, material, and gas type used: Correctly classifying between subheadings 73.11, 73.09, and 39.23, avoiding the risk of reclassification and retroactive tax collection.
- Support with state quality inspection registration and connecting with inspection bodies: Preparing documentation and registering early, in parallel with transport time, to shorten waiting time at port.
- Support in calculating actual tax and optimizing preferences: Advising on leveraging the appropriate C/O for preferential import tax, and keeping up to date on the latest VAT policy.
- Expertise in transporting pressure equipment: Ensuring proper lashing and packaging to protect the cylinder body’s structure from impact.
- Electronic customs declaration via VNACCS/VCIS and resolving issues at the border gate: Declaring the correct HS code and quickly handling any requests for additional documentation.
Why choose 3W Logistics for your imported gas cylinder shipment? Because this category of goods requires mandatory Group 2 quality inspection and pressure equipment safety inspection, businesses need a partner who thoroughly understands both the customs process and the technical inspection process to avoid unplanned yard storage costs — whether the goods are industrial gas cylinders or household fuel gas cylinders. We stand alongside you from HS code determination through to goods arriving at the warehouse — helping businesses shorten clearance time and avoid unnecessary added costs. Contact 3W for specific advice before signing your import contract.
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3W LOGISTICS CO., LTD – We here serve you there!
Email: info@3w-logistics.com
Website: www.3w-logistics.com
Ms. Apple is the CCO (Chief Commercial Officer) at 3W Logistics, with over 10 years of experience in sales and business operations management.
At 3W Logistics, Ms. Apple is responsible for commercial strategy, corporate customer development, managing a team of more than 50 sales professionals, and improving business performance in the logistics sector.
With practical experience in sales management and market development, Ms. Apple shares professional insights on business logistics solutions, international transportation, freight forwarding, customer management, trade lane development, and growth strategies in the logistics industry.
