ALLOY 20 PIPES AND TUBING @SOUTHERLY ALLOY CO.,LTD.
1. Product Description
Alloy 20, referred to as UNS N08020, is a nickel, iron, and chromium alloy. Engineers design this alloy to resist corrosion in harsh environments. Its unique composition, including nickel, chromium, molybdenum, and copper, makes it ideal for applications in chemical processing, pharmaceuticals, marine environments, and more. This guide explores the types, specifications, and applications of Alloy 20 pipes and tubing.
2. Product Types and Specifications
2.1 Alloy 20 Pipe Types
- Seamless Pipes: Manufactured without a welded seam, offering superior strength and corrosion resistance. Available in various sizes and schedules.
- Welded pipes use Alloy 20 sheets or strips. This makes them great for applications where users do not need seamless pipes.
- ERW Pipes: ERW pipes are manufactured using resistance welding techniques. They have a uniform wall thickness and are cost-effective.
2.2 Alloy 20 Tubing Types
- Precision Tubing: High-accuracy tubing with tight tolerances, commonly used in instrumentation and control systems.
- Heat Exchanger Tubing: Specifically designed for use in heat exchangers, offering excellent thermal conductivity and corrosion resistance.
2.3 Technical Standards and Specifications
Alloy 20 pipes and tubing are produced according to the following standards:
- ASTM B729: Covers seamless, welded, and heavily cold-worked Alloy 20 pipes for high-temperature and corrosive service.
- ASTM B464: Pertains to welded Alloy 20 pipes for general corrosive service.
- ASME SB729 and SB464: ASME equivalents ensuring compliance with boiler and pressure vessel codes.
2.4 Common Dimensions and Standards
Alloy 20 pipes and tubing are available in a variety of sizes and wall thicknesses:
| Nominal Pipe Size (NPS) | Outside Diameter (OD) | Schedule | Wall Thickness (inches) |
|---|---|---|---|
| 1/2 inch | 0.840 inches | 10 | 0.109 |
| 1/2 inch | 0.840 inches | 40 | 0.147 |
| 1/2 inch | 0.840 inches | 80 | 0.188 |
| 1 inch | 1.315 inches | 10 | 0.109 |
| 1 inch | 1.315 inches | 40 | 0.133 |
| 1 inch | 1.315 inches | 80 | 0.179 |
| 2 inch | 2.375 inches | 10 | 0.154 |
| 2 inch | 2.375 inches | 40 | 0.218 |
| 2 inch | 2.375 inches | 80 | 0.276 |
Note: Higher schedule numbers indicate increased wall thickness and pressure capacity.
Custom dimensions are also available. The outer diameters can be up to 26 inches for welded pipes. Wall thicknesses range from Schedule 10 to Schedule 160.
3. Key Features
- Exceptional Corrosion Resistance: Superior performance against sulfuric acid, phosphoric acid, and chloride-induced stress corrosion cracking.
- High Strength and Durability: Excellent mechanical properties for use in harsh environments.
- Ease of Fabrication: Alloy 20 stainless pipes and tubing are easy to weld and shape. They maintain their strength and resist corrosion.
4. Manufacturing Processes
- Seamless Pipes: Manufactured through extrusion or piercing, offering high strength and superior resistance to corrosion.
- Welded Pipes: Created by welding sheets or strips of Alloy 20, ideal for applications requiring larger diameters.
- ERW Pipes: Produced using high-frequency electric resistance welding, ensuring consistent wall thickness and smooth finishes.
5. Special Properties for Pipes and Tubing
Alloy 20 pipes and tubing exhibit the following properties:
- Resistance to Pitting and Crevice Corrosion: Suitable for environments with high chloride concentrations.
- Stress Corrosion Cracking Resistance: Effective in minimizing failures caused by stress and corrosive environments.
- Thermal Stability: Withstands high temperatures without losing mechanical properties.
6. Applications
- Chemical and Petrochemical Processing：Alloy 20 pipes and tubes are essential. Companies use them to transport strong chemicals. This includes substances like sulfuric and nitric acids. People typically use them in pipelines for reactors, storage tanks, and mixers.
- Pharmaceutical and Food Industries: Alloy 20 tubing is popular in sterile processing lines. It resists contamination and meets hygiene standards.
- Marine and Offshore Environments: Alloy 20 pipes and tubing resist corrosion well in seawater and other chloride-rich conditions. This makes them ideal for desalination plants, heat exchangers, and marine piping systems.
- Other Industries: These applications include power plants, pulp and paper production, and wastewater treatment systems. In these areas, strength and resistance to corrosion are crucial.
7. Why Choose Our Alloy 20 Pipes and Tubing?
At Southerly Alloy Co., Ltd., we dedicate ourselves to providing high-quality Alloy 20 pipes and tubing. We ensure they meet your exact needs.
- Comprehensive Inventory: We offer a wide range of sizes, types, and finishes to suit diverse applications.
- Customization Options: You can tailor our pipes and tubing to meet specific industry standards and project needs.
- Global Shipping: Reliable and fast delivery services to ensure your operations stay on track.
- Quality Assurance: All products undergo rigorous testing to meet international standards, including ASME BPVC Section IX requirements.
8. Contact Form
Whether you need Alloy 20 seamless pipes, welded pipes, or heat exchanger tubing, we are here to provide the best solutions for your project. Contact Southerly Alloy Co., Ltd. today to request a quote or learn more about our Alloy 20 products!
