The Q235B Carbon Steel PN16 RF Plate Flange

   The Q235B Carbon Steel PN16 RF Plate Flange is our best-selling general-grade flat welding flange manufactured per GB/T9113 national standard, designed for universal low and medium pressure non-corrosive industrial piping systems. As a cost-effective slip-on plate flange, it adopts hot rolling integral forging molding instead of traditional casting technology, which greatly improves structural toughness and compression resistance to avoid cracking during long-term pipeline operation. Every raw Q235B steel plate is inspected via spectral analysis before production, eliminating recycled mixed steel material to guarantee stable mechanical performance.

   This raised face(RF) plate flange features standard 2mm sealing convex height, matched with common rubber and asbestos gaskets for stable sealing effect. Adopt full CNC drilling process for all bolt holes, precise hole pitch and verticality ensure seamless bolt installation without forced assembly. The surface is treated with anti-rust black oil immersion, forming a dense protective oil layer to isolate air moisture, adapting to indoor and outdoor short-term storage and construction environments. Standard pressure rating PN16 supports maximum 1.6MPa working pressure, covering most municipal water supply, factory ventilation and civil plumbing working conditions.