
Cryogenic Loading Arms
Cryogenic Loading Arms (often referred to as LNG Loading Arms) are specialized piping systems specifically designed for the loading and unloading of ultra-low-temperature media ranging from -20°C to -196°C. Their primary function is the closed-loop loading and unloading of media-such as Liquefied Natural Gas (LNG), liquid nitrogen, liquid oxygen, and cryogenic ethylene-into and out of road tankers and rail tank cars.
Key Parameters
Design Temperature: -196°C to +70°C
Operating Temperature:-162°C (Normal boiling point of LNG)
Design Pressure:1.6 MPa
Nominal Diameter: Liquid Phase: DN50 / DN80; Vapor Phase: DN25 / DN50
Applicable Media
LNG (Liquefied Natural Gas) (Most common application)
Liquid Nitrogen, Liquid Oxygen, Liquid Argon
Liquefied Ethylene, Liquefied Propane, and other cryogenic chemical products
Application Scenarios
LNG fueling stations, liquefaction plants, and receiving terminals
Loading and unloading of cryogenic gases (Air Separation Units) and cryogenic chemical media
- Closed-loop loading of rail tank cars and road tankers





