ASTM A790 TP S32205 Stainless Steel Electropolished Pipes

ASTM A790 TP S32205 Stainless Steel Electropolished Pipes

ASTM A790 TP S32205 Stainless Steel Electropolished Pipes are high-performance duplex stainless steel pipes combining the advantages of austenitic and ferritic microstructures. Grade S32205 offers superior strength, excellent resistance to stress corrosion cracking, and outstanding protection against pitting and crevice corrosion in chloride-rich environments.

The electropolishing process produces an ultra-smooth, bright, and contamination-free surface that enhances corrosion resistance and reduces surface roughness. This makes S32205 electropolished pipes ideal for critical applications requiring both mechanical strength and high levels of cleanliness.

Specifications

Standard	ASTM A790 / ASME SA790
Grade	TP S32205 (Duplex 2205)
Type	Seamless / Welded & Electropolished
Size Range	1/8" NB to 24" NB
Wall Thickness	Schedule 5S to Schedule 80S
Surface Roughness	Ra ≤ 0.4 µm (or as per customer requirement)
Length	6 Meters Standard / Custom Length
End Type	Plain End, Beveled End

Key Features

• Duplex Structure: High strength with improved toughness.
• Excellent Chloride Resistance: Superior protection against pitting and crevice corrosion.
• Electropolished Finish: Ultra-smooth and hygienic surface.
• High Mechanical Strength: Nearly double the yield strength of austenitic grades.
• Cost Efficient: Reduced wall thickness possible due to higher strength.

Chemical Composition (Typical)

Element	TP S32205 (%)
Carbon	0.03 Max
Chromium	22.0 – 23.0
Nickel	4.5 – 6.5
Molybdenum	3.0 – 3.5
Nitrogen	0.14 – 0.20

Applications

• Offshore Oil & Gas Installations
• Desalination Plants
• Chemical Processing Equipment
• Marine & Coastal Structures
• High-Pressure Fluid Handling Systems

Quality Testing

• Hydrostatic Testing
• Ultrasonic Testing (UT)
• Surface Roughness (Ra) Measurement
• Positive Material Identification (PMI)
• Mechanical & Dimensional Inspection

Conclusion

ASTM A790 TP S32205 Stainless Steel Electropolished Pipes deliver exceptional mechanical strength, superior chloride resistance, and a highly refined surface finish. Their duplex microstructure and electropolished surface make them ideal for demanding industrial, marine, and high-purity applications requiring durability and reliability.