Large Diameter Rolled Slip-On Flange covers DN800 to DN2000 super big caliber, customized large-size socket flange adopting special steel plate rolling & integral shaping process, exclusive for municipal water diversion, reservoir water delivery, urban trunk sewer and large industrial circulating piping projects. Compared with forged large flange, plate rolled process lowers production cost, shortens delivery cycle, meets large-scale municipal engineering bulk procurement demand.
Available material: Q235B, Q345B, 304 stainless steel optional, customizable PN10/PN16/PN25 multi-pressure grade per pipeline design requirement. Reinforced thickened flange edge design resists soil extrusion and pipeline axial tension, avoiding flange distortion during buried backfill construction. Enlarged inner socket bore fits large-caliber spiral steel pipe seamless plug-in positioning, solving large pipe centering difficulty on construction site. Unified RF sealing face, matched with large-size integral rubber gasket, overall uniform compression sealing for big pipeline interface.
Adopt secondary stress relief treatment to eliminate rolling processing internal stress, stable dimensional performance for long-term buried service. Bolt holes customized CNC layout according to national/international standards, support non-standard hole spacing customization. Outer surface coated with anti-rust primer or three-layer PE anti-corrosion for buried usage. Widely used for urban water diversion main pipe, reservoir outlet pipeline, park large circulating water pipe, factory super large waste water trunk pipe. Support on-site size survey, customized drawing production, 18-year large pipeline warranty, third-party dimensional acceptance.
Core Spec: Standard: GB/T9113/EN1092-1; Pressure: PN10/PN16/PN25 Optional; Face: RF; Material: Q235B/Q345B/304; Size: DN800-DN2000; Process: Steel Plate Rolling Forming
