ASME B16.5 A105N RF weld neck flanges: Engineering excellence for demanding applications
Haihao Group specializes in manufacturing industrial flanges that adhere to the most rigorous international benchmarks, with our ASME B16.5 A105N RF weld neck flanges standing as a testament to our dedication to precision engineering. These flanges are engineered to deliver exceptional performance in high-stakes environments, including chemical processing, offshore drilling, and heavy industrial systems.
Tailored Solutions for Diverse Needs
Recent client orders highlighted the versatility of our offerings:
- 3/4″-300 (RF/5.56): Ideal for compact piping systems requiring moderate pressure resistance.
- 8″-150RF (D219.1×6.35): A heavy-duty solution designed for large-bore pipelines in energy infrastructure.
Every A105N flange is produced to exacting ASME B16.5 tolerances, ensuring compatibility with global pipework standards. The raised face (RF) geometry enhances sealing integrity, while the weld neck taper minimizes stress concentration at joint interfaces.
ASME B16.5 A105N RF weld neck flange
Material Superiority: A105N Carbon Steel
The A105N grade forms the foundation of these flanges, offering a harmonious blend of machinability, toughness, and resistance to industrial corrosion. Detailed material specifications include:
Chemical Composition (Weight Percentage)
| Component | Allowable Range |
|---|---|
| Carbon (C) | ≤ 0.25% |
| Silicon (Si) | 0.10–0.35% |
| Manganese (Mn) | 0.60–1.05% |
| Phosphorus (P) | ≤ 0.015% |
| Sulfur (S) | ≤ 0.020% |
| Nickel (Ni) | ≤ 0.40% |
| Chromium (Cr) | ≤ 0.30% |
| Molybdenum (Mo) | ≤ 0.12% |
| Copper (Cu) | ≤ 0.40% |
| Vanadium (V) | ≤ 0.08% |
Composite Restrictions:
- Maximum combined Chromium-Molybdenum content: 0.32%
- Total alloy addition limit (Cu + Cr + Ni + Mo + V): 1.00%
Mechanical Performance
| Property | Minimum Requirement |
|---|---|
| Yield Strength | ≥ 250 MPa |
| Tensile Strength | 485–655 MPa |
| Elongation at Break | ≥ 22% |
| Reduction in Area | ≥ 30% |
These attributes ensure the flanges maintain structural integrity under thermal cycling, high-pressure surges, and aggressive media exposure.
Rigorous Quality Protocols
At Haihao Group, quality is non-negotiable. Each delivery includes:
- Certified Material Test Reports (CMTR): Validating chemical and mechanical conformity.
- Heat Treatment Documentation: Confirming normalized or quenched/tempered microstructures.
- EN10204 3.1 Compliance: Independent verification by accredited inspectors.
- Retained Test Specimens: Two sample coupons (120×60×40 mm and 130×30×30 mm) preserved for reference.
The Haihao Group Advantage
- Certification Portfolio: Compliance with ASME, API, and EN standards.
- Custom Fabrication: Bespoke solutions for non-standard dimensions and coatings.
- Global Reach: Serving multinational corporations and regional leaders across 6 continents.
- Process Transparency: Digital tracking of orders from raw material to dispatch.
Haihao Group’s ASME B16.5 A105N RF weld neck flanges represent the convergence of metallurgical expertise and manufacturing innovation. By prioritizing material integrity, dimensional accuracy, and third-party validation, we equip engineers with components that ensure system reliability in the planet’s most challenging industrial landscapes.
Request a quote today to explore how our flanges can optimize your next project. Email:sales@haihaogroup.com