EN10028-3 P355NL2 is a European standard steel for low-temperature pressure vessels, widely used in industries such as petroleum, chemical engineering, energy, nuclear power, and cryogenic engineering due to its excellent low-temperature toughness, weldability, and corrosion resistance. Specific application scenarios are as follows:
Low-Temperature Pressure Vessels
LPG/LNG Storage Tanks:
P355NL2 maintains high impact energy at temperatures as low as -50°C, exhibiting strong resistance to brittle fracture and ensuring the safety of liquefied petroleum gas (LPG) and liquefied natural gas (LNG) storage tanks during low-temperature storage and transportation.
Liquid Ammonia/Liquid Oxygen Equipment:
Its low-temperature toughness meets the storage requirements for media such as liquid ammonia and liquid oxygen, preventing container failure caused by low-temperature brittleness.
Energy and Chemical Engineering Equipment
Reactors and Heat Exchangers:
In chemical production, P355NL2 is used to manufacture high-pressure reactors and heat exchangers, capable of withstanding erosion from corrosive media (e.g., acids, alkalis, salts) while ensuring structural stability under low-temperature operating conditions.
Separators and Piping Systems:
Its excellent weldability and corrosion resistance make it an ideal material for separation columns, cryogenic pipelines, and other equipment, particularly in extreme environments such as polar or deep-sea conditions.
Cryogenic Engineering Structural Components
Marine Liquid Tanks:
In liquefied natural gas (LNG) carriers, P355NL2 is used to fabricate liquid tanks, with its low-temperature performance ensuring vessel safety during polar navigation.
Support Structures for Cryogenic Storage Tanks:
Used in steel structures supporting large cryogenic storage tanks, it must withstand the tank's self-weight and thermal stress under low-temperature conditions. The high strength and low-temperature toughness of P355NL2 meet design requirements.
