EN1092-1 Type12 F316L PN25 RF Socket Weld Flange is molybdenum-containing low-carbon forged socket weld flange, upgraded anti-corrosion version of 304 SW flange, customized for offshore platform, ship cabin, coastal chemical small-bore piping. Upgraded core performance: low-carbon anti-welding intergranular corrosion, Mo element anti-chloride pitting, thickened socket wall high pressure resistance, enhanced salt spray passivation, fillet weld gap anti-crevice corrosion, ATEX explosion-proof qualified for marine fluid pipeline.
Low-carbon optimized F316L material avoids carbide precipitation during welding heating process, preventing socket inner wall intergranular cracking after long-term seawater soaking. Added molybdenum component greatly improves resistance to brine, chloride solution and coastal salt fog electrochemical corrosion, marine service life 2.8 times longer than ordinary F304 socket weld flange. Thickened integrated socket wall upgrades pressure grade to PN25 2.5MPa, bearing higher liquid impact of ship water supply and ballast piping.
Standard EN sized socket bore, match European marine stainless steel seamless pipe perfectly without pipe end cutting modification. Optimized arc transition socket bottom, reduce fluid dead angle, minimize crevice corrosion inside welding gap. Whole body super pickling passivation passed 5000h neutral salt spray test, suitable for open-air coastal piping. Mirror lapped RF face matched marine oil-resistant composite gasket, dual anti-leakage protection. DN20-DN40 marine small bore in stock. Comply with PED pressure equipment certification. Custom anti-corrosion socket coating available. 18-month marine heavy anti-corrosion warranty, full ship inspection documents provided.
Core Product Advantages:1.Low carbon anti-welding grain corrosion;2.Mo-bearing anti-salt chloride erosion;3.Thick socket wall anti-impact deformation;4.Arc socket bottom reduce crevice corrosion;5.ATEX approved for offshore explosion-proof area
Core Spec: Standard: EN1092-1; Pressure: PN25(2.5MPa); Face: RF; Type: Socket Weld; Material: F316L Mo-bearing Stainless Steel; Process: Forged + Enhanced Passivation; Size: DN20-DN40
FAQ: Q: Why use 316L SW flange for ship pipe? A: 304 socket gap easy chloride pitting, 316L eliminates gap corrosion for permanent marine piping.
