High Quality WNRF Flange for Industrial Use | Reliable & Durable

Keywords: wnrf flange, flange wn 150 rf, ansi b16 5 150 rf, flange wnrf 150, flange wn 150
This article presents an in-depth look at WNRF (Weld Neck Raised Face) flanges following ANSI B16.5 specifications, focusing on market trends, technical specifications, application scenarios, and product superiority. Drawing from industry reports, actual client feedback, authoritative standards, and real product data, we help you make critical procurement and application decisions for rigorous industrial needs.

Weld Neck Raised Face Flanges (WNRF) are a key component in high-performance piping systems, especially under high pressure and temperature conditions. Their unique neck design ensures optimal stress distribution between piping and flange, offering enhanced mechanical strength. WNRF flanges are predominantly used across petrochemical, metallurgy, water treatment, power generation, and marine industries—meeting stringent reliability and long-term performance mandates.

Figure 1: Global Market Growth Trend for WNRF Flanges (2018–2024; Source: Marketwatch, 2024)

1. Rapid Adoption: Global demand for wnrf flanges has seen annual growth rates averaging 5.3% (2019–2023), driven by petrochemical expansions and stricter pipeline safety standards.
2. Regulatory Compliance: The migration towards ANSI B16.5 and ISO 9001-compliant flanges is now industry norm for critical applications, especially for corrosion and pressure intolerance.
3. Digital & CNC Integration: Factories now align with Industry 4.0—CNC machining of wnrf flanges improves accuracy & traceability, verifiable by radiographic/ultrasonic inspection records.

Typical "Flange WN 150 RF" In-situ Installation
(Source: YL Steel Fittings, 2024)

• Material Excellence: 100% EU/ASTM/ASME-approved steel billets, with material test certificates (MTCs) upon shipment for full traceability.
• Forging Advantages: Compared with casting, forging yields denser microstructure and markedly higher fatigue strength & durability, meeting API 6A tolerances.
• CNC Machining: Digital turning/milling (CNC) achieves surface roughness ≤ Ra 3.2μm on raised face, ensuring optimal gasket seating and leak resistance.
• QA/QC Inspection: Each wnrf flange is ultrasonically & dimensionally inspected; hardness, PMI (Positive Material Identification), and high-pressure hydrotesting (up to 1.5 × DN) are strictly enforced.
• Packing & Marking: Each product is batch/heat-marked and seaworthy-packed with silica gel & desiccants, ensuring no rust during global transit.

Flange WNRF 150 High-Pressure Test Bench (ISO Certified Lab, 2023)

• Superior Fatigue and Leak Resistance: The tapered hub and full penetration welding zone disperse stress waves, minimizing fatigue (up to 35% longer service according to PetroIndustry Journal, 2023).
• Corrosion Proof: State-of-the-art surface treatment and material selection (≥1000 hours salt spray resistance) ensure usage in acid, alkali or marine atmospheres.
• Optimal for High-Pulsation Systems: ANSI B16.5 150 RF successfully passes pipeline vibration and thermal cycling tests (per ASTM D1599) up to 1.5 million cycles, making it first-choice for fluid transport, high-temperature steam, and critical process lines.
• Easy Gasket Compatibility: The raised face ensures firm adhesion to gaskets (spiral wound, graphite, PTFE), preventing leaks even after maintenance cycles.
• Reduced Life-cycle Costs: Lower maintenance and inspection frequency, with life expectancy >20 years in standard operation—verified by major EPC contractors globally.

• Authoritative Third-Party Test Report can be delivered with each batch, upon client request.
• Services provided in partnership with major EPC firms: Siemens, Sinopec, Petrobras, Taiwan Power, etc.
• Annual export volume > 3500 tons, serving 47 countries (2023 data).
• 24/7 Customer Support and documented QA procedures meet global audit requirements.

1. Custom bore sizes, face finish (serrations, roughness Ra 3.2/6.3), extra surface treatments (galvanizing, PTFE coating, etc.).
2. Tailored marking as per project code and batch traceability (QR code, RFID optional).
3. Special tests: low-temp Charpy impact, macro/micro structural analysis, per ASTM, ISO, or client standards.
4. Warranty: 36 months, with "free replacement" for manufacturing defects (under documented maintenance).
5. Packing: Water-proof, export-grade packaging, wooden cases for overseas delivery.
6. Typical Production Cycle: Standard sizes: 16-24 days; Custom: 28-36 days; Stock available for urgent projects.