I. Product Function
1. Special sealing connection fittings for ballast water, seawater cooling, and freshwater fire-fighting pipelines of ocean-going and inland vessels;
2. Pressure-bearing connection fittings for vessel storage tanks, sea valve boxes, and inlet and outlet connections of engine room heat exchange equipment;
3. Supporting flanges for offshore drilling platforms and marine vessels operating under high salt spray and high chloride ion corrosion conditions;
4. Complete transition and fixing components for marine lined composite pipelines and stainless steel pipelines, suitable for vessel vibration conditions.
II. Specification and Material Parameter Table
Parameter Item | Production Range / Optional Type |
Nominal Diameter | DN50–DN1500; non-standard special sizes can be customized |
Structural Classification | Single-sided panel and double-sided panel structures |
Pressure Rating | PN10, PN16, PN25, meeting classification society pressure standards |
Processing Technology | Integral forged blank with CNC precision-machined sealing waterlines |
Applicable Standard | CB marine standards, CCS classification society certification specifications, and GB/T flange standards |
Available Materials | 304, 316L, 316Ti, and 2205 duplex stainless steel |
III. Material Application Scenarios
1. 304: economical type, suitable for freshwater and fire-fighting pipelines of inland vessels without seawater corrosion;
2. 316L: mainstream marine material, resistant to seawater chloride ions and salt spray corrosion, commonly used for ballast water pipelines of ocean-going vessels;
3. 316Ti: high-temperature-resistant material, suitable for high-temperature seawater cooling circulation systems in engine rooms;
4. 2205 duplex stainless steel: high strength and strong corrosion resistance, suitable for heavily corrosive seawater pipelines on offshore platforms.
IV. Product Advantages
1. Thickened integral forged structure, resistant to vessel bumping impact and structural deformation, ensuring stable pressure-bearing performance during long-term navigation;
2. The end face is precision-machined with multiple sealing waterlines, preventing seawater leakage even in vessel vibration environments;
3. Stainless steel base material is suitable for harsh marine high-salt-spray environments, effectively resisting chloride ion corrosion and extending the maintenance cycle of marine pipelines;
4. Single-sided and double-sided panel structures are available to match different bulkhead thicknesses and equipment installation spaces;
5. Compliant with CCS classification society manufacturing and inspection standards, and can be supplied as a complete set with marine composite elbows and overlay-welded composite straight pipes;
6. Bolt holes are evenly arranged in a circular pattern, providing balanced locking force and convenient installation, removal, and maintenance in narrow cabin spaces.