Cryogenic semi-trailers are specialized transportation vessels that store and transport liquefied gases at extremely low temperatures. These trailers play a crucial role in various industries that rely on the safe and efficient transport of cryogenic liquids such as liquefied natural gas (LNG), liquefied oxygen (LOX), liquefied nitrogen (LIN), and liquefied argon (LAR). This article will explore the different types of cryogenic semi-trailers, their features, construction, and applications.

Types of Semi-Trailers

  1. LNG Semi-Trailers: LNG semi-trailers are explicitly designed to transport liquefied natural gas. These trailers are constructed with high-quality materials and insulation systems to maintain the cryogenic temperatures required for LNG. They have specialized storage tanks that can handle low-temperature environments and ensure LNG’s safe and efficient transport.
  2. LOX/LIN/LAR Semi-Trailers: LOX, LIN, and LAR semi-trailers transport liquefied oxygen, nitrogen, and argon, respectively. These trailers are built with principles similar to LNG semi-trailers but are tailored to each gas’s requirements and properties. They feature robust insulation systems and safety mechanisms to prevent the loss of cryogenic liquids during transport.

Manufacturer of Cryogenic Semi-trailer

The cryogenic semi-trailer tanker mainly consists of a horizontal storage tank, half trailer chassis, operation box, cryogenic liquid pump, automatic compressor, flow hose and connection pieces between the tank and chassis. It is a necessary gas carrier in cryogenic liquid transportation.
1. Storage medium: LO2, LN2, LAr, LCO2 and LNG
2. Working pressure: 0.2MPa ~ 2.2MPa, or as requrested.
3. Effective capacity: 4m³~51m³
4. Insulation method: vacuum powder
5. Manufacturing standards: A2, C2, GC1, GB-150, ASME, U STAMP, ISO9001 : 2008
6. 20000L size 10590mm*2480mm*3750mm

what is cryogenic Semi-trailer?

Features of  SemiTrailers

  • Insulation Systems: Liquid tank trailers have advanced insulation systems to minimize heat transfer and maintain the low temperatures required for cryogenic liquids. These insulation systems typically utilize perlite, vacuum insulation panels, or multi-layered insulation to provide efficient thermal protection.
  • Safety Measures: Safety is of paramount importance in cryogenic transportation. Semi-trailers are equipped with safety valves, pressure relief devices, and emergency shutdown systems to prevent overpressure or potential hazards. They also incorporate advanced monitoring and control systems to ensure the safe operation of the trailers.
  • Pressure Control: Tanker trailer feature pressure control systems that maintain the appropriate pressure inside the tanks. These systems allow for the controlled release of excess pressure during transport and prevent the risk of over-pressurization.
  • Structural Integrity: The construction of cryogenic semi-trailers ensures their structural integrity and durability. They are designed to withstand the extreme conditions encountered during transportation, including temperature variations, road vibrations, and potential impacts. High-quality materials such as carbon steel and stainless steel are used to ensure the strength and longevity of the trailers.

Construction of liquid tank trailers

Cryogenic semi-trailers comprise several vital components that facilitate the safe and efficient transportation of cryogenic liquids. The main components include:

  • Storage Tanks: Liquid tank trailers have specialized storage tanks designed to withstand extremely low temperatures and pressures of cryogenic liquids. The tanker trailer is constructed using carbon steel for the outer tank and stainless steel for the inner tank. The inner tank is designed to maintain the cryogenic temperatures and prevent any leakage or loss of the stored liquid.
  • Insulation System: The insulation system is critical in minimizing heat transfer and maintaining the low temperatures required for cryogenic liquids. Different insulation materials, such as perlite or vacuum panels, provide efficient thermal insulation and reduce heat ingress into the storage tanks.
  • Chassis and Suspension: The chassis and suspension system of a semi trailer truck are designed to provide stability, load-bearing capacity, and manoeuvrability. They are built to withstand the weight of the storage tanks and the cryogenic liquid, ensuring safe transportation even on uneven terrain.
  • Piping and Valves: Liquid tank trailers incorporate a network of piping and valves that allow for the controlled flow of cryogenic liquids. These components are designed to handle the low temperatures, high pressures, and unique properties of cryogenic liquids.

Applications of  Tanker Trailer

Cryogenic semi-trailers find extensive applications across various industries, including:

  • Energy Industry: LNG semi-trailers are vital in transporting liquefied natural gas from production facilities to distribution points or end-users. They enable the efficient transport of LNG, used for power generation, heating, and as a cleaner fuel alternative in the transportation sector.
  • Industrial Gas Supply: LOX, LIN, and LAR semi-trailers are widely used to supply and distribute industrial gases. These gases are essential in various industries, including metal fabrication, healthcare, food processing, electronics, and aerospace. Cryogenic semi-trailers ensure the safe and reliable delivery of these gases to customers.
  • Chemical and Petrochemical Industry: Semi trailer truck transports cryogenic chemicals and petrochemicals. These trailers enable the efficient and secure transport of gases and liquids at extremely low temperatures, ensuring the integrity and quality of the products during transit.
  • Research and Development: Tanker trailer is also utilized in research and development applications, particularly in laboratories or facilities that require transporting cryogenic materials for scientific experiments, medical research, or other specialized purposes.


Leading the Way in Cryogenic Tank Manufacturing

DSW holds ISO9001:2008 International Quality Supervision System Certification. Our facilities encompass a building of 170,000 square meters, and our total assets amount to 180 million.

With a workforce of 500 employees, including 55 technicians (6 super-engineers, 19 engineers, 10 primary technicians, one super-technician, four technicians, and 15 Nondestructive Testers in RT and UT), we operate with eight departments (technology, production, sales, quality, purchase, finance, secretary, and standard), along with a general management office, an international export office, five workshops, and 1 Installation Company.

Our production capacity allows us to manufacture 120 different cryogenic tanks per month.

With engineering experience exceeding 30 years, these vacuum-insulated semi-trailers are designed for performance, ease of operation, and safety. These trailers can be designed to operate in any state or region.

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