Corrosion Resistant Round Stainless Steel Pipe For Marine Chemical Applications

Price Negotiable
Price: Negotiable (Request a Quote)
MOQ: 100kg
Delivery Time: 15-25days
Brand: Baosteel,TISCO
Product Description

The High Corrosion Resistance Round Pipe is engineered from premium stainless steel grades with optimized chromium, nickel, and molybdenum content to withstand aggressive environments where standard steel pipes would rapidly degrade. This pipe provides exceptional protection against rust, pitting, crevice corrosion, and stress corrosion cracking caused by chlorides, acids, alkalis, and marine atmospheres. Available in seamless or welded construction, it delivers long-term reliability with minimal maintenance, making it the preferred choice for chemical processing, marine, offshore, and water treatment applications.

Product Specifications
ParameterDetails
StandardsASTM A312, A269, A213; EN 10216-5; ASME SA312; JIS G3459
Available Grades316, 316L, 317L, 904L, 254SMO, Duplex 2205, Super Duplex 2507
Outer Diameter6 mm – 610 mm (1/8″ – 24″ NPS)
Wall Thickness0.5 mm – 30 mm (Schedule 5S, 10S, 40S, 80S; or custom)
Length3m, 6m, or custom lengths upon request
Manufacturing ProcessSeamless (cold drawn / hot rolled) or Welded (TIG / ERW)
Heat TreatmentAnnealed after manufacturing
Surface FinishPickled, passivated, or polished
End FinishPlain ends, beveled ends, or threaded
Chemical Composition (Typical Values, %)
GradeCrNiMoNCuPREN*
316L16.0-18.010.0-14.02.0-3.024-26
317L18.0-20.011.0-15.03.0-4.029-33
904L19.0-23.023.0-28.04.0-5.01.0-2.034-38
254SMO19.5-20.517.5-18.56.0-6.50.18-0.220.5-1.042-45
Duplex 220522.0-23.04.5-6.53.0-3.50.14-0.2035-38
Super Duplex 250724.0-26.06.0-8.03.0-5.00.24-0.3242-45

PREN = Pitting Resistance Equivalent Number (Cr% + 3.3*Mo% + 16*N%). Higher PREN = better corrosion resistance.

Mechanical Properties (at Room Temperature)
GradeTensile Strength (MPa) minYield Strength (MPa) minElongation (%) minHardness (HB) max
316L48517040217
317L51520540217
904L49021535220
254SMO65030035250
Duplex 220562045025290
Super Duplex 250773055020310

Tested in accordance with ASTM E8 / E8M.

Corrosion Resistance Comparison
Environment304316L904LDuplex 2205254SMO
Marine / SeawaterPoorGoodExcellentExcellentExcellent
Chloride (high concentration)PoorModerateVery GoodGoodExcellent
Sulfuric Acid (dilute)PoorGoodExcellentVery GoodExcellent
Sulfuric Acid (concentrated)PoorPoorGoodModerateGood
Phosphoric AcidFairGoodExcellentVery GoodExcellent
Acetic AcidGoodExcellentExcellentExcellentExcellent
Caustic / AlkaliGoodExcellentExcellentExcellentExcellent
Stress Corrosion CrackingLowLowVery HighHighVery High

Key Features
  • Superior Pitting Resistance – High PREN values prevent localized corrosion

  • Excellent Crevice Corrosion Protection – Critical for flanges, gaskets, and threaded connections

  • Chloride Resistance – Withstands seawater, brackish water, and de-icing salts

  • Acid Resistance – Suitable for sulfuric, phosphoric, and organic acids

  • Long Service Life – Reduces replacement frequency and downtime

  • Low Maintenance – No painting or coating required

  • Wide Temperature Range – Performs from cryogenic to elevated temperatures

  • 100% Recyclable – Environmentally sustainable material

Applications
Marine & Offshore

Seawater cooling lines
Offshore platform piping
Shipbuilding (ballast, fuel, hydraulic lines)
Desalination plant brine lines
Subsea umbilicals and flow lines

Chemical Processing

Heat exchangers and condensers
Reactor feed and discharge lines
Acid transfer piping (sulfuric, phosphoric)
Solvent and intermediate transfer

Oil & Gas

Sour gas service (H₂S resistant)
Downhole tubing and casing
Flow lines and gathering lines
Firewater systems

Water Treatment

Reverse osmosis feed lines
High-purity water distribution
Wastewater and effluent lines
Potable water systems

Pulp & Paper

Bleaching plant piping
Digester and recovery lines

Food & Pharmaceutical

Sanitary process lines
CIP (clean-in-place) systems

Comparison by Grade – When to Use
Application SeverityRecommended GradePREN RangeTypical Industries
Mild (fresh water, low chlorides)304L18-20Plumbing, food, general industrial
Moderate (brackish water, dilute acids)316L24-26Marine (low risk), chemical (mild)
High (seawater, sulfuric acid)904L / Duplex 220534-38Desalination, offshore, chemical
Severe (hot seawater, high chlorides, reducing acids)254SMO / Super Duplex 250742-45Subsea, aggressive chemical, FGD systems
Contact Us

For inquiries, technical datasheets, or custom sizes, please contact our sales team.

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shanxi Zhongcheng Metal Co., Ltd.
Location Room 2, No. 221 Tianzhang Avenue, Fengdong New City, Xi'an, Shaanxi Province
Contact Person Zhongcheng Metal

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