Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of marine stainless steel tubing in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
Our Marine Stainless Steel Tubing is specifically engineered for harsh marine and offshore environments, providing exceptional corrosion resistance, durability, and mechanical strength. Manufactured from high-grade austenitic stainless steel (primarily 316L, 304, and 2205 duplex), these tubes are ideal for marine vessels, offshore platforms, chemical processing, and coastal infrastructure.
Available in seamless or welded forms, with custom diameters, wall thicknesses, and lengths, our marine stainless steel tubing meets ASTM, EN, and JIS standards, ensuring long-lasting performance in saltwater and high-humidity conditions.
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Products Description
Product Name: Marine Stainless Steel Tubing
Also Known As: 316L Marine Tube, Seamless Stainless Tube, Corrosion-Resistant Stainless Tube
Forms Available: Seamless / Welded Tubing
Diameter Range: 6–219 mm (customizable)
Wall Thickness: 0.5–20 mm
Length: 1–12 m (customizable)
Grades Available: 316L, 304, 2205 Duplex, 317L, 904L
Key Features: Marine-Grade Corrosion Resistance, High Strength, Weldable, Pressure-Resistant
Applications: Marine Vessels, Offshore Platforms, Chemical & Pharmaceutical Piping, Coastal Infrastructure
Standards: ASTM A269, ASTM A213, EN 10217, JIS G3463
Standard Specifications (Metric + Imperial)
| Tube Type | Outer Diameter (mm) | Outer Diameter (inch) | Wall Thickness (mm) | Wall Thickness (inch) | Length (m) | Length (ft) | Form |
|---|---|---|---|---|---|---|---|
| Seamless / Welded | 6–219 | 0.236–8.62 | 0.5–20 | 0.020–0.787 | 1–12 | 3.28–39.37 | Round |
Dimensional Tolerances:
Outer Diameter: ±0.1–0.5 mm
Wall Thickness: ±0.05–0.2 mm
Length: ±5 mm
Surface: Pickled and Passivated for corrosion resistance
Typical Chemical Composition (Representative Grades)
| Grade | C (%) | Cr (%) | Ni (%) | Mo (%) | Fe (%) | Others |
|---|---|---|---|---|---|---|
| 316L | ≤0.03 | 16–18 | 10–14 | 2–3 | Balance | – |
| 304 | ≤0.08 | 18–20 | 8–10 | – | Balance | – |
| 2205 Duplex | ≤0.03 | 22–23 | 4–6 | 3–3.5 | Balance | N 0.14–0.20 |
| 317L | ≤0.03 | 18–20 | 11–14 | 3–4 | Balance | – |
| 904L | ≤0.02 | 19–23 | 24–28 | 4–5 | Balance | Cu 1–2 |
Mechanical Properties (Typical)
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness |
|---|---|---|---|---|
| 316L | 485–620 | ≥170 | 40 | ≤187 HB |
| 304 | 520–700 | ≥205 | 40 | ≤200 HB |
| 2205 Duplex | 620–880 | ≥450 | 25 | ≤290 HB |
| 317L | 485–620 | ≥170 | 40 | ≤187 HB |
| 904L | 550–750 | ≥250 | 35 | ≤200 HB |
Advantages of Marine Stainless Steel Tubing
Exceptional Corrosion Resistance – Suitable for saltwater and marine environments
High Mechanical Strength – Pressure-resistant for piping and structural applications
Seamless & Welded Options – Flexible for various marine and industrial installations
Weldable and Fabricatable – TIG, MIG, and arc welding compatible
Long Service Life – Reduced maintenance in offshore and coastal applications
Applications
Marine Vessels: Piping, railings, ladders, and deck components
Offshore Platforms: Process lines, structural tubing, risers
Chemical & Pharmaceutical: Corrosion-resistant pipelines and tanks
Coastal Infrastructure: Bridges, handrails, seawater pumps, desalination plants
Industrial Applications: Food processing, heat exchangers, HVAC systems
Inspection & Quality Assurance
Chemical composition verification via spectrometer
Dimensional and surface inspection (pickled and passivated finish)
Mechanical property testing (tensile, elongation, hardness)
Non-destructive testing (NDT) for critical applications
Optional third-party inspection (SGS, BV, TÜV)
Export-standard packaging for secure shipping
Looking for high-quality marine stainless steel tubing? We provide custom diameters, wall thicknesses, grades, and export-ready packaging.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ
1. Which grades are best for marine environments?
316L and 317L: Excellent corrosion resistance, standard for marine applications
2205 Duplex: Superior strength and corrosion resistance for offshore platforms
904L: High nickel-copper alloy for extremely aggressive saltwater exposure
2. Are the tubes seamless or welded?
Available in both seamless and welded forms, depending on pressure and structural requirements
3. Can these tubes be welded or bent?
Yes. Grades 304, 316L, and 2205 are weldable. Some high-strength duplex grades may require special welding procedures
4. What quality certifications are available?
Mill Test Certificate (MTC 3.1 / 3.2)
ASTM / EN / JIS standard compliance
Optional third-party inspection (SGS, BV, TÜV)
5. What is the typical MOQ and lead time?
MOQ: 500 kg–5 tons depending on diameter and grade
Lead time: 10–25 days for stock, 20–40 days for custom orders
6. Are custom sizes and lengths available?
Yes. Diameters, wall thicknesses, and lengths can be tailored to project requirements
7. Why choose our marine stainless steel tubing?
Premium corrosion-resistant material for marine and offshore use
Seamless and welded options for industrial flexibility
Professional QA, third-party certification, and reliable global shipping
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