This Q235B PN16 RF Slip-On Flange is cost-effective GB/T9113 standard slip-on flange, the most popular socket welding flange for general low-to-medium pressure non-corrosive piping systems. Different from common plate flange, it adopts reserved inner socket design, which lets pipe slip through the flange bore directly, greatly simplifying on-site alignment and welding procedures, cutting 30% installation time compared with ordinary welded flange. Made of hot-rolled integral Q235B mild steel, no recycled scrap doping, passed spectral composition inspection before production to guarantee stable tensile strength and impact resistance for long-term pipeline operation.
Featured standard 2mm RF raised face sealing structure, compatible with universal rubber gasket, asbestos gasket and non-metal composite gasket, realizing stable sealing for normal-temperature water, compressed air, ventilation fluid medium. Full CNC bolt hole drilling with ±0.1mm tolerance, standard hole pitch for fast bolt assembly without forced correction. Finished with anti-rust black oil immersion, forming dense oil film to resist oxidation and surface rust during transit and warehouse storage. Rated PN16 pressure grade supports 1.6MPa steady working pressure, ideal for municipal water supply, factory ventilation, civil building plumbing conventional pipelines.
Adopt double-sided fillet welding fixing method, inner and outer weld joint enhances overall connection tightness, avoiding pipeline loosening under slight vibration. Complete full-process quality inspection: raw material test, flatness detection, hydraulic leak test, appearance grinding. Size range DN15-DN600 full stock for fast delivery. Not suitable for strong acid, alkali and high-temperature steam working conditions. We offer neutral export packing, bulk order discount, 12-month factory warranty, free batch inspection service for EU clients.
Core Spec: Standard: GB/T9113; Pressure: PN16; Face: RF; Material: Q235B Carbon Steel; Process: Hot Rolled Integral Forming; Size: DN15-DN600
