EN1092-1 316L PN25 Marine Slip-On Flange is professional anti-chloride socket flange for offshore platform, ship bilge and coastal piping projects, made of low-carbon molybdenum-containing SUS316L stainless steel. Upgraded from ordinary 304 slip flange, it features excellent seawater electrolytic corrosion and salt fog oxidation resistance, solving flange pitting rust and socket crack failure in coastal high-chloride environment.
Thickened socket and flange disc structure upgrades pressure to PN25 grade, bearing 2.5MPa hydraulic pressure, adapting ship water hammer impact, hull sway vibration and offshore high-load working conditions. Whole body acid pickling passivation forms stable chromium passive film, doubling seaside service life compared with polished stainless steel slip flange. Inner socket precision grinding ensures tight pipe fit, no gap deflection under ship vibration. RF fine-ground sealing face matches marine oil-resistant rubber gasket, reliable sealing for circulating seawater medium.
Passed 5000-hour neutral salt spray test, ultrasonic internal defect inspection and full hydraulic tightness test. DN20-DN600 marine standard size in stock for shipyard urgent order. Double-sided full penetration welding enhances weld anti-fracture performance, avoiding weld split under frequent hull shaking. Main application: offshore platform water pipe, ship sewage piping, coastal wharf fire pipe, seaside chemical circulating pipe. Adopt marine anti-collision export packing, 20-year seaside anti-corrosion warranty, complete ship inspection certificate and customs clearance documents supplied.
Core Spec: Standard: EN1092-1; Pressure: PN25; Face: RF; Material: SUS316L Low-carbon Marine Stainless Steel; Process: Forged + Pickling Passivation; Size: DN20-DN600
FAQ: Q: Can work under full seawater immersion?
A: Yes, professional marine 316L grade fits long-term seawater immersed installation.
