API 5L (钢板)
Pipeline steel plate
Steel Grades: Gr.A, Gr.B, X42, X46, X52, X56, X60, X65, X70, X80, X90, X100, X120 (PSL1/PSL2)
Primarily used as raw material for pipeline production, it is employed in the manufacture of large-diameter oil and gas transmission pipes such as straight seam submerged arc welded pipes (LSAW) and spiral welded pipes (SSAW). It is widely used in long-distance transmission trunk lines, gathering and transmission networks, and station process pipelines for crude oil, refined oil, and natural gas. High-grade steel plates can be used in demanding pipelines such as those operating under high pressu
ISO 3183
Steel pipes for the oil and gas industry
Steel Grades: L245, L290, L320, L360, L390, L415, L450, L485, L555, L690 (PSL1/PSL2)
Widely used in the manufacture of pipeline pipes for international oil and gas pipeline projects, transnational oil and gas transmission trunk lines, and large-scale EPC projects, covering long-distance transportation of crude oil, refined oil, and natural gas. Equivalent to API 5L and adopting internationally unified standards, it facilitates cross-border procurement and project coordination. High-strength steel products are suitable for high-pressure, large-diameter, and long-distance transmis
EN 10208-1/2
Steel pipes for transporting flammable fluids
Steel Grades: L235GA, L245GA, L290GA, L360GA, L415GA, L450GA, L485GA (A级); L245GB, L290GB, L360GB, L415GB, L450GB, L485GB (B级)
Primarily used in the manufacture of pipelines for gas transmission, oil transmission, and urban gas networks under European standards, as well as for the safe transport of industrial flammable fluids. Class B, due to its stricter delivery requirements, is suitable for applications with higher safety levels; with its specified low-temperature toughness and weldability, it is suitable for pipeline projects in cold regions and those with high joint quality requirements.
ASTM A690/A690M
High-strength low-alloy steel plates for marine environments
Steel Grades: （高强度低合金耐海水腐蚀钢）
It is mainly used in marine engineering components such as offshore platform structures, pile foundation splash zone components, subsea pipeline auxiliary and support structures, port and wharf facilities, and seawater desalination equipment. With its superior seawater corrosion resistance, good strength, and weldability compared to ordinary carbon steel, it is suitable for load-bearing and enclosure components that are subjected to long-term seawater immersion or alternating wet and dry environ
