Alloy 31 pipe (UNS N08031, 1.4562) has excellent corrosion resistance, mechanical strength, and long service life for harsh industrial environments. We supply reliable Alloy 31 seamless pipe and welded pipe for global buyers.
Key Properties of Alloy 31 Pipe
- High resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking (SCC)
- PREN ≥ 48, suitable for chloride-containing environments
- Good performance in both oxidizing and reducing corrosive media
- Stable in sulfuric acid, phosphoric acid, seawater, and flue gas desulfurization (FGD) conditions
- Wide working temperature range: -196°C to 550°C
- High tensile strength and good ductility for safe operation
- Excellent weldability and fabrication performance
alloy n08031 Standards & Grades
Standard: ASTM B622, ASME SB622
Grade: Alloy 31, UNS N08031, 1.4562, X1NiCrMoCuN26-31-6-1
Delivery condition: Annealed, pickled, bright annealed
Compliance with NACE MR0175 for oil and gas applications
Production & Processing Technology of Alloy 31 Pipe
Raw Material Selection: Adopt high-quality Alloy 31 billets (ingots) that meet ASTM B622 standards, with strict inspection of chemical composition and mechanical properties before production.
Seamless Pipe Production: Billet heating → Piercing → Hot rolling → Cold drawing (cold rolling) → Solution annealing → Pickling → Inspection → Packaging.
Welded Pipe Production: Strip cutting → Forming → Welding → Heat treatment → Straightening → Inspection → Packaging.
Post-Processing: Support threading, flanging, bending, cutting, polishing, passivation, and other processing, to provide ready-to-use pipes for customers, reducing on-site processing costs.
Main Applications of Alloy 31 Pipe
Flue Gas Desulfurization (FGD) Systems: Absorber pipes, spray pipes, circulating pipelines.
Chemical Industry: Sulfuric acid production, phosphoric acid production, organic synthesis, waste acid recovery, chemical reaction equipment pipelines.
Oil & Gas Industry: Sour gas extraction, offshore oil platforms, oil and gas transmission pipelines, compatible with sour gas (H2S) and seawater environments.
Marine & Seawater Desalination: Seawater desalination equipment pipelines, marine heat exchangers, shipbuilding pipelines.
Pulp & Paper Industry: Bleaching systems, chemical treatment pipelines.
Pharmaceutical & Food Industry: High-purity chemical transmission pipelines, food processing equipment, non-toxic, corrosion-resistant, meeting hygiene standards.
Cryogenic & High-Temperature Applications: Cryogenic storage tanks, high-temperature boilers, heat exchanger pipelines, stable performance in extreme temperatures.
Advantages of Buying Alloy 31 Pipe From Us
Stable Quality: Strict raw material selection and full-process quality inspection, 100% qualified products, providing MTC reports for each batch.
Full Specifications in Stock: Seamless and welded pipes of various sizes are in stock, short delivery time .
Competitive Price: Direct factory supply, no middlemen, offering preferential prices for bulk orders, reducing customer procurement costs.
Customization Support: Support custom sizes, lengths, surface finishes, and processing, meeting the unique needs of different projects.
Professional Technical Support: A team of professional engineers provides technical consultation, material selection guidance, and after-sales technical support.
Perfect Logistics & Packaging: Export-standard packaging to prevent damage during transportation; cooperate with well-known logistics companies, global door-to-door delivery.
Free Samples: Provide free small samples for customers to test quality before bulk purchase, ensuring product compliance with requirements.
Contact Us for Alloy 31 Pipe Quotation
As a professional Alloy 31 pipe supplier with years of export experience, we are committed to providing high-quality products and thoughtful services for global customers. Whether you need standard or customized Alloy 31 seamless/welded pipes, please contact us:
Send us your requirements (pipe type, size, wall thickness, length, quantity, application), and we will provide you with a quick quotation, free sample, and professional technical solution within 24 hours. We look forward to cooperating with you and becoming your reliable Alloy 31 pipe supplier!
