GB/T9113 ASTM A182 F304 PN16 RF Welding Neck Flange is integral hot-forged stainless steel butt weld flange, the most cost-effective permanent pipe connection fitting for medium-pressure corrosive piping systems. Compared with slip-on flange, plate flange and threaded flange, it owns 5 core competitive advantages: tapered gradual thickening neck design, seamless full penetration butt weld, uniform fluid inner bore, ultra-high structural rigidity and detachable bolted sealing, which solves pipeline crack, fluid turbulence, interface leakage and vibration loosening common pain points.
Made of virgin F304 austenitic stainless steel without recycled scrap mixing, certified by full spectral test, featuring natural chromium oxide passive film, excellent anti-rust, anti-oxidation and weak acid corrosion resistance, long service life over 15 years for humid workshop, water treatment and municipal piping. The smooth tapered hub realizes gradual stress transfer between pipe and flange, disperses cyclic water hammer and vibration pressure, avoids stress concentration at welding joint, suitable for long-term continuous operating pipeline.
High-precision CNC turned RF sealing face Ra3.2 smooth finish, matched with PTFE and rubber gasket, zero leakage sealing performance. Whole body pickling passivation treatment enhances surface anti-corrosion ability. Standard bolt hole drilling ±0.1mm tolerance, fully interchangeable with GB standard pipe valves. Factory full inspection: ultrasonic flaw detection, hydraulic pressure test, flatness inspection. DN15-DN600 in stock, PN16 1.6MPa working pressure. Factory direct supply, support custom logo, custom neck height, non-standard size OEM. 15-year service life, 15-month factory warranty, complete MTC certification provided.
Core Product Advantages: 1.Tapered neck anti-stress crack; 2.Full penetration weld high connection strength;3.Smooth inner bore reduce fluid erosion;4.304 native material anti-corrosion;5.Detachable easy maintenance
Core Spec: Standard: GB/T9113; Pressure: PN16; Face: RF; Material: F304 Stainless Steel; Process: Die Forged + Pickling Passivation; Size: DN15-DN600
FAQ: Q: Why choose WN flange over slip-on flange?
A: WN flange has better vibration resistance, higher pressure resistance and longer service life for permanent pipeline connection.
