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Outstanding Seawater Resistance: Proven performance in marine atmospheres, splash zones, and fully submerged conditions with minimal corrosion risk.
Enhanced Chloride Tolerance: Superior to standard 304 in resisting pitting and crevice corrosion caused by chlorides and brackish water.
Excellent Weldability and Fabricability: Can be welded, bent, and formed using standard marine fabrication techniques without compromising corrosion resistance.
Long-Term Durability: Maintains structural integrity and aesthetic appearance in harsh marine environments, reducing maintenance and replacement costs.
Applications
Ideal for seawater intake and discharge pipes, offshore platform piping, shipbuilding pipelines, desalination systems, coastal architectural structures, and marine equipment components.
We provide pipes in various diameters, wall thicknesses, and lengths, with options for cutting, beveling, polishing, and hydrostatic testing. Full material certification compliant with ASTM A312, EN 10216-5, NORSOK M-650, and marine industry standards is included to ensure reliability and traceability.


Our stainless steel pipes, crafted from premium grades like 304, 316L, 321, and 2205 duplex, deliver exceptional corrosion resistance, high-temperature stability, and structural integrity. Available via two core manufacturing processes: Seamless (SMLS) pipes (hot-rolled/cold-drawn from solid billets) for high-pressure scenarios like oil/gas pipelines and boilers; and Welded (ERW/TIG) pipes (formed from steel strips then welded) for cost-efficient, medium-pressure applications such as water supply, HVAC, and food processing. Offered in standard diameters with surface finishes (polished, pickled, brushed), each batch comes with MTC, complying with ASTM, ASME, and DIN standards.


Production starts with high-purity stainless steel billets (for seamless) or strips (for welded). Seamless pipes undergo heating, piercing to form hollow shells, then multi-pass rolling/drawing for dimensional accuracy. Welded pipes go through strip uncoiling, forming into tubes, and ERW/TIG welding (with post-weld annealing to eliminate stress). Both lines feature online thickness/diameter monitoring and non-destructive testing (NDT). Full digital control ensures every pipe meets strict standards for performance and consistency.


In order to ensure product quality, we will arrange professional personnel to check product quality, packaging, weight, hardness, etc., according to customer requirements of product specifications, looking for high-quality and cheap cooperative factories in China, to provide customers with one-stop procurement services and quality assurance.


Excellent packaging: waterproof paper and plastic film + iron cover + at least three strapping straps + strapping straps fixed on iron or wood pallets can effectively protect products from corrosion and various climate changes during transportation. Generally speaking, we ship from Shanghai, Tianjin, Qingdao and Ningbo ports. We have worked with many experienced shipping companies for a long time to find the most suitable mode of transportation for you.

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