EN1092-1 SUS316L PN25 Marine Blind Flange is low-carbon molybdenum-containing anti-chloride solid blank flange, specially designed for ship bilge pipeline, offshore platform pipe end, coastal wharf piping permanent closure. Upgraded from ordinary 304 blind flange, molybdenum alloy component enhances seawater electrolytic corrosion resistance, solving flange pitting rust, surface peeling and brittle fracture caused by long-term salt fog and seawater immersion in coastal high-chloride environment.
Super thickened solid disc upgrades pressure grade to PN25, bearing 2.5MPa hydraulic impact pressure, adapting ship hull sway vibration, seawater water hammer impact offshore high-load working conditions. Whole body acid pickling passivation forms stable chromium passive protective film, seaside service life 2.2 times longer than ordinary polished stainless steel blind flange. Fine-ground RF sealing face matches marine oil-resistant rubber gasket, reliable sealing for circulating seawater, bilge sewage medium under floating pipeline vibration.
Passed 5000-hour neutral salt spray test, ultrasonic internal defect inspection and full hydraulic tightness test, compliant with ship classification inspection standard. DN20-DN600 marine dedicated caliber in stock for shipyard urgent order. Integral forged structure has uniform stress dispersion, no crack risk under long-term hull shaking. Widely applied for offshore platform standby pipe closure, ship sewage pipe end block, coastal fire pipe isolation, seaside circulating water pipe blanking. Adopt marine anti-collision export packing, 20-year seaside anti-corrosion warranty, complete ship inspection customs documents supplied.
Core Spec: Standard: EN1092-1; Pressure: PN25; Face: RF; Material: Low-carbon SUS316L Marine Stainless Steel; Process: Forged + Full Pickling Passivation; Size: DN20-DN600
FAQ: Q: Suitable for full seawater immersed installation? A: Yes, professional marine 316L grade supports permanent immersed sealing.
