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Cryogenic Loading Arms

Apr 23, 2026

202604221057283727109

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

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