ASTM A333 (焊接)
Low-temperature welded steel pipes
Steel Grades: Gr.1, Gr.3, Gr.6, Gr.8 (ERW/EFW/LSAW)
It is mainly used for large-diameter cryogenic pipelines, LNG transmission pipelines, and large-diameter inlet and outlet pipes of cryogenic storage tanks. It is also used for cryogenic process trunk pipelines, gathering and transmission pipelines and plant pipe corridors. It adopts welding and forming to meet the large-diameter requirements. It can be matched with cryogenic grades according to the grade to form cryogenic pressure transmission pipelines. It is stable and reliable in operation an
EN 10217-4
Pressure welded steel pipe - Low temperature performance steel
Steel Grades: P265GH, 16Mo3, P355N, P355NL1, P355NL2
Widely used in LNG pipelines, cryogenic storage tank connections and ethylene plants, as well as refrigeration system pipelines and cryogenic process pipelines and gathering and transportation pipelines. The corresponding cryogenic grade can be selected according to the grade. With stable welds and cryogenic toughness, it forms a welded pressure-bearing transportation pipeline system that can serve stably in cryogenic environments for a long time and ensure transportation safety.
EN 10217-3 (低温级)
Pressure welded steel pipe - alloy fine-grained steel (low temperature grade)
Steel Grades: P275NL1, P275NL2, P355NL1, P355NL2, P460NL1, P460NL2
Primarily used for cryogenic pressure vessel shells and cryogenic large-diameter pipelines, as well as for cryogenic high-strength pressure-bearing pipelines, equipment connections, and gathering and transmission pipelines, the NL series fine-grained steel combines high strength with low-temperature toughness. It is welded to meet the requirements of large diameters and thick walls, forming cryogenic pressure-bearing transmission structures and connecting components to ensure safe operation in h
