Special Flanges
- High Surface Finish: Surface roughness can reach Ra0.37 or even higher for reliable sealing.
- Tight Dimensional Control: Overall tolerance is held within 0.05 mm to ensure precise fit.
- Controlled Size & Weight: Each flange is less than OD 850 mm or no more than 80 kg per piece.
- Premium Materials: Available in SS304, SS316, SS321, SS318, F55, F60, 904L to handle corrosion and high pressure.
Technical Specifications
| Item | Specification |
| Product Name | Special Flanges |
| Maximum Outside Diameter | < 850 mm |
| Maximum Unit Weight | ≤ 80 kg per flange |
| Surface Roughness | Up to Ra0.37 or higher on sealing surfaces |
| Dimensional Tolerance | Within 0.05 mm |
| Available Materials | SS304, SS316, SS321, SS318, F55, F60, 904L |
| Manufacturing Process | Precision CNC machining and fine finishing |
| Production Basis | Fully according to customer drawings and specifications |
| Sample Policy | Two free samples for quality checking |
Customization Options
- Custom inner/outer diameter, thickness and hub geometry according to drawings.
- Special sealing faces (raised face, ring-type joint, tongue & groove, custom gasket grooves).
- Flexible bolt-hole number, diameter, PCD and tapped/through-hole patterns.
- Defined surface roughness levels on sealing areas to match gasket or process requirements.
- Optional heat treatment, pickling, passivation or protective coatings.
Applications
- Chemical and petrochemical reactors, columns and custom nozzles.
- Oil & gas manifolds, separators and high-pressure piping spools.
- Power generation piping, condensers and heat-exchange interfaces.
- Offshore and marine systems handling seawater or corrosive media.
- Desalination and water-treatment equipment with demanding corrosion resistance.
- Food, beverage and pharmaceutical process lines requiring smooth, cleanable surfaces.
- Any engineered project that requires non-standard, tight-tolerance flanges.