Hebei Huayang Steel Pipe Co., Ltd is one of the leading manufacturers and suppliers of gas pipeline lsaw l245/l360 530*8 406.4*9.5 steel pipe in China. Please feel free to buy cheap gas pipeline lsaw l245/l360 530*8 406.4*9.5 steel pipe from our factory. All customized products are with high quality and low price.
Specification Parameters and Engineering Applicability Overview
| Item | Description |
|---|---|
| Product Type | LSAW Longitudinal Submerged Arc Welded Gas Transmission Pipe |
| Applicable Standards | ISO 3183 and GB/T 9711 |
| Steel Grade | L245 / L360 |
| Outside Diameter | 530 mm / 406.4 mm |
| Wall Thickness | 8 mm / 9.5 mm |
| Service Medium | Natural gas, city gas, industrial fuel gas |
| Typical Working Conditions | Medium and low pressure long-distance transmission, trunk and branch pipeline networks |
This gas transmission pipeline specification is mainly designed for urban gas trunk networks and regional energy pipeline projects. The 530×8 pipe is typically used for main transmission lines, suitable for long-distance and stable gas supply. The 406.4×9.5 pipe is commonly applied in branch pipelines and urban loop networks, offering a balance between pressure resistance and installation flexibility. L245 and L360 steel grades provide reliable strength together with excellent weldability and low-temperature impact toughness, making them suitable for complex geological conditions and multi-climate environments.
Huayang LSAW Pipeline Manufacturing System and Gas Transmission Applications
Huayang Steel Pipe has long specialized in the mass production of LSAW longitudinal submerged arc welded gas pipelines, covering outside diameters from 406 mm to 1422 mm and wall thicknesses from 7 mm to 50 mm. This production range fully meets the requirements of common gas pipeline specifications such as 530×8 and 406.4×9.5.
The pipes are manufactured using the JCOE forming process with internal and external double-sided submerged arc welding. Each weld seam is subjected to ultrasonic testing, X-ray inspection, and hydrostatic pressure testing to ensure uniform strength and consistent weld quality.
For gas transmission service conditions, Huayang can provide complete coating solutions, including 3PE external anti-corrosion coating and internal liquid epoxy lining, suitable for buried, long-distance, and above-ground pipeline installations. These pipelines have been successfully applied in multiple domestic urban gas trunk networks and regional energy transmission projects, demonstrating long-term sealing reliability and structural stability in continuous operation.
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