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Stainless Steel Pipes | 2205/2507 Duplex Corrosion-Proof Tubes

$1,688.00 SGD

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Quantity 2 - 49 tons 50 - 99 tons >= 100 tons

Thickness 1-100mm

Stainless Steel Pipes | 2205/2507 Duplex Corrosion-Proof Tubes

Property	2205 Duplex (UNS S32205)	2507 Super Duplex (UNS S32750)
Material Grade	UNS S32205 / EN 1.4462	UNS S32750 / EN 1.4410
Chemical Composition	22% Cr, 5% Ni, 3% Mo, 0.18% N	25% Cr, 7% Ni, 4% Mo, 0.27% N
Tensile Strength	620–750 MPa	800–1000 MPa
Yield Strength	≥450 MPa	≥550 MPa
Hardness (Rockwell B)	290 HRB	290–320 HRB
Temperature Resistance	Up to 300°C (continuous)	Up to 300°C (continuous)
Corrosion Resistance	Excellent resistance to chloride SCC, pitting, crevice corrosion	Superior resistance to chloride SCC, organic acids, seawater
Standard Compliance	ASTM A790, A928, EN 1.4462	ASTM A790, A269, EN 1.4410
Dimensions (OD)	6–2500 mm	6–2500 mm
Wall Thickness	0.5–150 mm	0.5–150 mm
Surface Finish	Annealed, Pickled, Polished	Electropolished, Mirror Finish
Process	Seamless, Welded with TIG	Cold Drawn Seamless, Precision Welded
Applications	stainless steel sink drain pipe, chemical reactors, offshore platforms	stainless steel water pipe, desalination plants, 2.5 stainless steel exhaust pipe systems

Unmatched Corrosion Resistance
- 2205 Duplex: Combines 22% chromium and 3% molybdenum for resistance to chloride stress corrosion cracking (SCC), ideal for stainless steel sink drain pipe in coastal environments.
- 2507 Super Duplex: Enhanced with 25% chromium and 4% molybdenum, delivering exceptional resistance to pitting and crevice corrosion in stainless steel water pipe systems exposed to seawater or acidic media.
Mechanical Superiority
- Tensile Strength: 2507 achieves 1000 MPa, doubling the strength of standard austenitic steels, making it suitable for high-pressure 2.5 stainless steel exhaust pipe retrofits.
- Bend Strength: Both grades support cold bending up to 180° without cracking, critical for custom plumbing and industrial layouts.
Versatility in Fabrication
- Seamless/Welded Options: Compatible with stainless steel sink drain pipe installations requiring smooth internal surfaces for hygienic flow.
- Electropolished Finish: Reduces bacterial adhesion in stainless steel water pipe networks, meeting NSF/EN standards for potable water.

The weight of stainless steel pipes is calculated using:
$Weight (kg/m) = \frac{( O D - W T ) \times W T \times 0.02466}{1000}$
Where:

Example: A 2.5 stainless steel exhaust pipe with 63.5 mm OD and 2.5 mm wall thickness weighs 3.77 kg/m.

Laser Etching: ASTM/EN standards, heat number, and alloy grade (e.g., "UNS S32205") for traceability.
Color Coding: Optional bands for rapid identification in industrial inventory systems.

Despite their corrosion-resistant properties, rust can occur due to:

Chloride Exposure: Coastal or industrial environments degrade passive oxide layers, especially in welded stainless steel sink drain pipe joints without post-weld cleaning.
Intergranular Corrosion: Improper welding of 2205/2507 without nitrogen stabilization leads to chromium carbide formation at grain boundaries.
Surface Contamination: Iron particles from cutting tools or grease disrupt the protective chromium oxide layer, critical for stainless steel water pipe in hygienic industries.
Galvanic Corrosion: Direct contact with copper in mixed-material systems (e.g., 2.5 stainless steel exhaust pipe with copper fittings) accelerates oxidation.

2205 Duplex: HVAC systems, stainless steel sink drain pipe, and chemical reactors.
2507 Super Duplex: Offshore oil platforms, stainless steel water pipe networks, and high-temperature 2.5 stainless steel exhaust pipe systems.

ISO 9001-Certified Quality: Rigorous adherence to ASTM/EN standards, validated by SGS and TUV certifications.
Global Inventory: 10,000+ tons of 2205/2507 pipes in stock, ready for urgent stainless steel water pipe or 2.5 stainless steel exhaust pipe projects.
Customization: Tailored stainless steel sink drain pipe dimensions, surface finishes, and cut-to-length services.
Sustainability: 100% recyclable materials with 50+ year lifespans, reducing environmental impact.
Technical Support: 25+ years of metallurgical expertise, offering welding guides and corrosion prevention strategies.

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