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JIS G3446-1994 JIS G3448-1997 JIS G3459-1997 JIS G3463-1994,ect.
GB13296-1991 GB14975-2002 GB14976-2002,ect.
Size:
ND5 - DN400
Length:
6m length or cutting any length as request
Applications:
fluid and gas transport, structure , boiler, heat exchanger, super heater
What Is 329 Stainless Steel Pipe?
329 stainless steel pipe, also known as ASTM A789/A790 329 SST pipe, is a duplex stainless steel grade renowned for its exceptional corrosion resistance, high strength, and durability. Composed of a balanced ferrite-austenite microstructure, it combines the best properties of ferritic and austenitic stainless steels, making it ideal for harsh environments.
Key Characteristics and Composition
Chemical Composition:
Chromium (Cr): 23-28%
Nickel (Ni): 3-6%
Molybdenum (Mo): 1-3%
Carbon (C): ≤0.08%
Other elements: Manganese, Silicon, Phosphorus, Sulfur.
Mechanical Properties:
Tensile strength: ≥795 MPa
Yield strength: ≥450 MPa
Elongation: ≥25%
Excellent resistance to stress corrosion cracking (SCC) and pitting in chloride-rich media.
Applications of 329 Stainless Steel Pipe
329 SST pipe is widely used in industries requiring high corrosion resistance and structural integrity:
Chemical Processing: Reactors, heat exchangers, pipelines for corrosive fluids.
Oil and Gas: Subsea equipment, wellheads, and pipelines in sour gas environments.
Power Generation: Nuclear and thermal power plant components.
Environmental Engineering: Wastewater treatment facilities, chemical waste systems.
Advantages Over Other Stainless Steel Grades
Duplex Structure: Balanced ferrite-austenite phases enhance strength and resistance to SCC.
Cost-Effective: Lower nickel content than austenitic grades (e.g., 316L) while maintaining high performance.
Weldability: Good weldability with proper procedures, suitable for complex fabrications.
Temperature Resistance: Performs well in both high (-20°C to 300°C) and low-temperature applications.
Manufacturing and Standards
329 stainless steel pipes are produced via:
Seamless Pipe: Manufactured from solid billets for high-pressure applications.
Welded Pipe: Formed from sheets/plates, suitable for lower-pressure systems.
Standards compliance:
ASTM A789/A790, ASME SA789/SA790, EN 10216-5, JIS G3463.
Keywords and Phrases of our pipes
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Why Choose 329 Stainless Steel Pipe?
For projects demanding superior resistance to chloride-induced corrosion, high tensile strength, and long-term reliability, 329 stainless steel pipe offers a proven solution. Its duplex microstructure makes it a preferred choice in harsh industrial environments where conventional stainless steels may fail.
Looking for 329 stainless steel pipe suppliers? Contact reputable manufacturers adhering to international standards for quality assurance and custom specifications.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification：
Verified Supplier
Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...
