Home / Products / Stainless Steel Pipe / Marine Grade 316 316L Stainless Steel Square Tube For Coastal Saltwater Applications
Quality Marine Grade 316 316L Stainless Steel Square Tube For Coastal Saltwater Applications factory
Quality Marine Grade 316 316L Stainless Steel Square Tube For Coastal Saltwater Applications factory

Marine Grade 316 316L Stainless Steel Square Tube For Coastal Saltwater Applications

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel，TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Ability: 10000tons
Tags

Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

Marine Stainless Steel Square Tube
Product Summary
316 stainless steel square tube is a hollow structural section with four equal sides. Grade 316 contains molybdenum, which provides superior corrosion resistance against chlorides, salt water, and harsh chemicals. Our 316 square tubes are ideal for marine, coastal, and chemical processing applicatio...

Product Details

Highlight:

Marine Stainless Steel Square Tube

,

316L Stainless Steel Square Tube
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH)
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description

316 stainless steel square tube is a hollow structural section with four equal sides. Grade 316 contains molybdenum, which provides superior corrosion resistance against chlorides, salt water, and harsh chemicals.

Our 316 square tubes are ideal for marine, coastal, and chemical processing applications where standard 304 stainless steel may not perform adequately. Both welded and seamless options are available.

Product Specifications
Parameter Details
Standard ASTM A554, A312, A269, EN 10296, JIS G3446, GB/T 12770
Grade 316, 316L
Size (Width x Width) 10 mm x 10 mm – 200 mm x 200 mm
Wall Thickness 0.8 mm – 6.0 mm
Length 3000 mm, 4000 mm, 6000 mm (custom cut available)
Process Welded (ERW) or Seamless (Cold Drawn)
Surface Finish Mill finish, Pickled, Polished (No.4, BA, Mirror), Brushed
Chemical Composition (Grade 316 / 316L, Reference %)
Element Grade 316 Grade 316L
Carbon (C) ≤ 0.08 ≤ 0.03
Silicon (Si) ≤ 1.00 ≤ 1.00
Manganese (Mn) ≤ 2.00 ≤ 2.00
Phosphorus (P) ≤ 0.045 ≤ 0.045
Sulfur (S) ≤ 0.030 ≤ 0.030
Chromium (Cr) 16.0 – 18.0 16.0 – 18.0
Nickel (Ni) 10.0 – 14.0 10.0 – 14.0
Molybdenum (Mo) 2.0 – 3.0 2.0 – 3.0

The addition of molybdenum (2.0–3.0%) provides superior resistance to pitting and crevice corrosion in chloride environments.

Mechanical Properties (Grade 316 / 316L)
Property Grade 316 Grade 316L
Tensile Strength ≥ 515 MPa ≥ 485 MPa
Yield Strength (0.2% offset) ≥ 205 MPa ≥ 170 MPa
Elongation ≥ 35% ≥ 35%
Hardness (Brinell) ≤ 217 HB ≤ 217 HB

Note: The values above are for reference only. Please refer to the mill test certificate for actual data.

Key Features

  • Superior corrosion resistance in chloride and salt water environments

  • Molybdenum addition resists pitting and crevice corrosion

  • Excellent performance in marine and coastal conditions

  • Good formability and weldability

  • High strength-to-weight ratio

  • Available in low carbon (316L) for welded structures

Applications

316 stainless steel square tube is specifically designed for harsh environments:

Marine & Offshore

  • Boat and ship railings

  • Dock and marina structures

  • Offshore platform handrails

  • Yacht ladders and frames

  • Seawall infrastructure

Coastal Architecture

  • Beachfront building frames

  • Coastal handrails and guardrails

  • Seaside restaurant furniture

  • Oceanfront balcony railings

  • Pier and boardwalk structures

Chemical & Pharmaceutical

  • Chemical plant supports

  • Pharmaceutical equipment frames

  • Laboratory furniture

  • Food processing in salt brine areas

  • Pulp and paper mill structures

Industrial & Heavy Duty

  • Wastewater treatment plant frames

  • Mining equipment supports

  • Petrochemical structures

  • Heat exchanger components

316 vs 304 Comparison
Environment Grade 304 Grade 316
Fresh water Good Excellent
Coastal / Splash zone Moderate (may stain) Excellent
Salt water immersion Not recommended Recommended
Chloride exposure Poor Good
Chemical exposure Moderate Excellent
Welded structures Risk of corrosion 316L preferred
Price Lower Higher
Choose 316 when:

  • Application is near salt water or coastal areas

  • Exposure to chlorides or de-icing salts

  • Chemical processing environments

  • Maximum corrosion resistance is required

Contact Us

For quotes, samples, or technical support, please reach out.

Related Products
  • Quality Precision 301 304 316 430 Cold Rolled Stainless Steel Strip 2B BA No.4 Finish factory

    Precision 301 304 316 430 Cold Rolled Stainless Steel Strip 2B BA No.4 Finish
    Precision cold rolled stainless steel strip is a narrow, thin-gauge stainless steel product manufactured to significantly tighter thickness and width tolerances than standard cold-rolled sheet. Unlike standard sheet (typically 1000mm or 1219mm wide), precision strip is produced in narrow widths — usually less than 600mm — and thin gauges from 0.05mm up to 3.0mm. The key differentiator is the tolerance : the precision strip holds thickness variations to as low as ±0.005mm,
  • Quality High Precision 304 Stainless Steel Seamless Pipe Cold Rolled Corrosion Resistance factory

    High Precision 304 Stainless Steel Seamless Pipe Cold Rolled Corrosion Resistance
    304 Stainless Steel Seamless Pipe The 304 stainless steel seamless pipe is a globally recognized standard grade in the stainless steel family. With a chemical composition of 18% chromium and 8% nickel, it offers excellent corrosion resistance, high toughness, and outstanding formability. Manufactured using precision seamless cold-rolling technology, this pipe delivers a superior surface finish, tight dimensional tolerances, and consistent mechanical properties — making it the
  • Quality UNS N06022 Hastelloy C-22 Alloy Corrosion Resistant ASTM B622 factory

    UNS N06022 Hastelloy C-22 Alloy Corrosion Resistant ASTM B622
    UNS N06022 is a nickel-chromium-molybdenum alloy renowned for its exceptional resistance to both oxidizing and reducing corrosive media. With a higher chromium content than C-276, plus controlled additions of tungsten, this alloy offers superior resistance to pitting, crevice corrosion, and stress-corrosion cracking in aggressive environments. UNS N06022 provides outstanding performance in wet chlorine, hydrochloric acid, sulfuric acid, and mixed acid solutions where many
  • Quality Austenitic Corrosion Resistant Hastelloy C-22 Nickel Alloy For Harsh Chemical Processing factory

    Austenitic Corrosion Resistant Hastelloy C-22 Nickel Alloy For Harsh Chemical Processing
    Hastelloy C-22: Ultimate Corrosion-Resistant Nickel Alloy Hastelloy C-22 is a fully austenitic, advanced corrosion-resistant nickel-chromium-molybdenum-tungsten alloy. It offers outstanding resistance to both uniform corrosion in oxidizing media and localized attack (pitting, crevice corrosion) in reducing environments. Unlike standard alloys, C-22 provides exceptional resistance to stress corrosion cracking (SCC), intergranular attack, and weld heat-affected zone (HAZ)

Send An Inquiry