Step 1: Define your buyer constraints first

Before you compare models, write down:

• Regulatory framework for the operating region. Which construction standard is required where the trailer will run? For example, ASME-based, ADR/EN-based or GB-based.
• Required volume and payload. How much LNG each trip has to deliver, and to which kind of site (industrial gas hub, power plant or fuelling station).
• Road weight limits. The legal gross vehicle weight on your routes limits how much tare weight and loading weight you can carry.
• Pressure needs at the receiving site. The working pressure has to suit the unloading equipment and the terminal.
• Route length and climate. Long-haul routes and harsh climates make insulation and structural durability more important.

Step 2: Match the construction standard

The LNG Semi-Trailer product page says the tank vehicle construction specifications comply with international standards including ASME VIII-1, ADR, EN 13530 and NB/T47058. Its technical specification table groups configurations by construction standard:

Start with the standard your operating region requires, then narrow down by volume. A configuration built to one standard should not be assumed to meet the requirements of another region. Ask for the relevant design and inspection documents for the configuration you choose, and check them against local regulations.

Step 3: Compare volume, filling ratio and loading weight together

Volume alone does not tell you the payload. The published table shows that the maximum filling ratio differs between configurations (95%, 90% or 85%), and each configuration has its own loading weight. To find the practical fit:

• Compare loading weight against the LNG quantity you need to deliver per trip.
• Use the maximum filling ratio to understand how much of the stated volume can be used.
• Check that the resulting combination fits your route's legal weight limits once the tractor and tare weight are included.

Step 4: Check working pressure, tare weight and total weight

The High Capacity LNG Semi Trailers page lists three models in the 52 m³ class, all with a working pressure of 7 bar:

Models A and B have similar water volumes but different tare and total weights. That difference matters if your routes are close to a gross weight limit. For Model C, the tare and total weights are not published, so ask for them before you compare it against your weight limits. If 7 bar does not suit your receiving site, discuss the pressure requirement directly. The page says the design can be customized for specific volume and pressure requirements, but any custom values have to be confirmed in a project specification.

Step 5: Review insulation and durability for your route

Both product pages describe high-vacuum multi-layer insulation. The LNG Semi-Trailer page also mentions vacuum acquisition technology and a long vacuum life. The High Capacity page describes reinforced cryogenic shells, high-grade alloy steels with anti-corrosion coatings, and optimized valve and piping systems for unloading. These are design descriptions, not measured boil-off or holding-time figures. If your route is long or runs through extreme temperatures, ask for the boil-off rate, holding time and test conditions in writing.

The High Capacity page also describes management platform functions, including fleet monitoring, pressure analysis, maintenance alerts, volume tracking, compliance logs and thermal control. Confirm whether these are part of the supply scope for your order.

When these recommendations do not apply

• If you need a construction standard not shown here (for example, a specific national road-transport approval in your market), the published configurations do not by themselves show that the trailer meets it. Ask for confirmation first.
• If you need a volume or pressure outside the listed figures, a published model is not the answer. A customized design would need its own specification.
• If price, delivery time or certificates decide your purchase, this guide cannot help. None of these are covered by the published material.

Questions to ask an LNG semi trailer factory

When you contact an LNG semi trailer factory, ask for:

1. The exact construction standard and the supporting documents for the configuration you want.
2. Volume, maximum filling ratio, loading weight, tare weight and total weight for that configuration.
3. Working pressure and whether any customization is needed.
4. Boil-off or holding-time data with test conditions, if thermal performance is important to you.
5. The supply scope, including any monitoring or management platform functions.

To review the published configurations, see the LNG Semi-Trailer product page.