
ASTM A403 WP2205 Seamless Equal Cross
✅ ASTM A403 WP2205 Seamless Equal Cross – High Performance Duplex Stainless Steel Pipe Fittings
SSM supplies premium quality ASTM A403 WP2205 Seamless Equal Cross Fittings, designed for reliable four-way pipeline connections in high-performance industrial, chemical, oil & gas, marine, and process piping systems.
Manufactured from ASTM A403 WP2205 Duplex Stainless Steel, these seamless equal cross fittings combine the excellent corrosion resistance of austenitic stainless steel with the high strength of ferritic stainless steel. The four-way equal branch design allows fluid distribution in multiple directions while maintaining consistent pipe diameter, providing an efficient solution for complex piping layouts requiring strength, durability, and corrosion resistance.
With seamless forming technology, precise dimensional control, and high-quality surface finishing, ASTM A403 WP2205 Seamless Equal Crosses ensure smooth flow paths, reliable connections, and excellent resistance against pitting, crevice corrosion, and stress corrosion cracking in demanding service environments.
✅ Key Features
Product Type:
ASTM A403 WP2205 Seamless Equal Cross / Duplex Stainless Steel Four-Way Pipe Fitting
Material:
Duplex Stainless Steel UNS S31803 / S32205 (2205 Duplex Stainless Steel)
Standard:
ASTM A403 / ASME B16.9 / ASME B16.25 / MSS SP-43 / ISO / Custom Standards
Design Type:
Equal Cross / Four-Way Pipe Branch Fitting
Connection Type:
Butt Weld Ends
Manufacturing Process:
Seamless Hot Forming / Hydraulic Forming / Heat Treatment
Surface Finish:
Pickled / Passivated / Sand Blasted / Machined Finish
Size Range:
1/2" – 24" (DN15 – DN600)
(Custom Sizes Available)
Wall Thickness:
SCH 5S / SCH 10S / SCH 40S / SCH 80S / Custom Thickness
Inspection & Certification:
MTC / EN10204 3.1 / PMI Testing Available
🔧 Material Properties – ASTM A403 WP2205 Duplex Stainless Steel
| Element | Typical Content (%) |
|---|---|
| Chromium (Cr) | 22.0–23.0 |
| Nickel (Ni) | 4.5–6.5 |
| Molybdenum (Mo) | 3.0–3.5 |
| Nitrogen (N) | 0.14–0.20 |
| Carbon (C) | ≤0.03 |
| Manganese (Mn) | ≤2.0 |
| Silicon (Si) | ≤1.0 |
Typical Mechanical Properties:
| Property | Value |
|---|---|
| Tensile Strength | ≥620 MPa |
| Yield Strength | ≥450 MPa |
| Elongation | ≥25% |
| Hardness | ≤310 HBW |
| Density | Approx. 7.8 g/cm³ |
⚙️ Advantages
✅ Superior Duplex Stainless Steel Performance
ASTM A403 WP2205 material provides a balanced microstructure of approximately equal austenite and ferrite phases, delivering high strength and excellent corrosion resistance.
✅ Excellent Corrosion Resistance
Provides outstanding resistance to:
Chloride stress corrosion cracking
Pitting corrosion
Crevice corrosion
General corrosion in aggressive environments
✅ Seamless Manufacturing Structure
The seamless forming process eliminates weld seams, improving structural reliability and providing enhanced performance under pressure and temperature fluctuations.
✅ Equal Four-Way Connection Design
The equal cross configuration allows connection of four pipes with the same diameter, providing flexible flow distribution and simplified piping system design.
✅ High Strength-to-Weight Ratio
Compared with conventional stainless steel grades, duplex 2205 offers higher mechanical strength, allowing optimized piping design and improved service reliability.
✅ Suitable for Harsh Environments
Ideal for offshore, marine, chemical, and industrial applications where high corrosion resistance and mechanical performance are required.
✅ Applications
Oil & Gas Industry
Used in offshore platforms, subsea pipelines, production facilities, and high-corrosion process systems.
Chemical Processing Industry
Suitable for chemical pipelines, reactors, heat exchanger systems, and corrosive fluid transportation.
Marine Engineering
Applied in seawater piping systems, desalination plants, shipbuilding, and offshore equipment.
Petrochemical Facilities
Used in refining units, pressure piping systems, and process equipment requiring duplex stainless steel performance.
Water Treatment & Desalination
Ideal for reverse osmosis systems, seawater treatment plants, and high-chloride water applications.
Industrial Process Piping
Used for fluid distribution systems requiring high strength, durability, and corrosion resistance.
📋 Technical Specifications
| Item | Specification |
|---|---|
| Fitting Type | Seamless Equal Cross |
| Material Grade | ASTM A403 WP2205 |
| Material Standard | UNS S31803 / S32205 |
| Shape | Four-Way Equal Branch |
| Connection | Butt Weld |
| Manufacturing | Seamless Hot Forming |
| Standard | ASTM A403 / ASME B16.9 |
| Heat Treatment | Solution Annealing |
| Testing | PMI / Hydrostatic Test / Dimensional Inspection |
| Certification | EN10204 3.1 Available |
✅ Why Choose SSM
Over 30 years of experience in stainless steel and duplex pipe fittings manufacturing
Professional production according to ASTM, ASME, DIN, and international standards
Complete material traceability with MTC / EN10204 certification
Supply of duplex stainless steel grades including WP2205, WP2507, and special alloys
Advanced seamless forming, heat treatment, machining, and inspection capabilities
Customized sizes, wall thicknesses, connection types, and surface finishes available
Strict quality control ensures dimensional accuracy and reliable performance
Global supply capability with professional technical support
📩 Request A Quote
SSM can supply ASTM A403 WP2205 Seamless Equal Cross Fittings in various sizes, wall thicknesses, and configurations to meet demanding oil & gas, chemical, marine, and industrial piping requirements.
Contact SSM today for pricing, technical datasheets, material certificates, and worldwide shipping solutions.
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