Special Pressure Vessel Flanges
- Precise Dimensions: Tolerance within 0.05 mm to ensure tight, leak-free sealing on pressure vessels.
- Size Range: Up to 80 kg per flange or 50–1200 mm outer diameter.
- Premium Materials: Stainless steel and super duplex grades F55, F60, and 904L are available for aggressive media.
- Quality Surface Finish: Smooth, scratch-free sealing faces to minimise gasket wear and leakage risk.
- Pressure Service Ready: Engineered for boilers, reactors, columns and other high-pressure, safety-critical equipment.
Technical Specifications
| Parameter | Specification |
| Product name | Pressure Vessel Flanges |
| Diameter range | 50 mm – 1200 mm |
| Max single-piece weight | ≤ 80 kg |
| Dimensional tolerance | ≤ 0.05 mm (per drawing) |
| Typical pressure service | Medium to high-pressure vessels and piping |
| Available materials | Stainless steel, super duplex F55, F60, 904L |
| Manufacturing process | Forging + CNC machining + final inspection |
| Sealing faces | RF, RTJ, flat face, or per customer drawing |
| Standards/codes | Per customer requirement (e.g., ASME, EN, GB) |
| Surface condition | Machined, smooth, scratch-free sealing surface |
| Sample policy | 2 pcs free samples for pressure vessel flange projects |
| Packaging | Export wooden cases/pallets for sea or land transport |
Customization Options
- Custom flange dimensions (OD, ID, thickness, hub design) according to vessel nozzle drawings.
- Choice of sealing face type: RF, RTJ, FF, tongue-and-groove, or special profiles.
- Tailored bolt hole patterns, quantity, and bolt circle diameters.
- Material selection matching design code, corrosion allowance, and process medium.
- Optional heat treatment and hardness requirements as per engineering specification.
- Special coatings or surface treatments (passivation, anti-rust oil, etc.).
Applications
- Power station boilers, steam drums, and economisers.
- Petrochemical reactors, columns, and pressure vessels.
- Refinery separators, heat exchangers, and storage tanks.
- Fertiliser and chemical processing equipment.
- Offshore platforms and marine pressure systems.
- General high-pressure piping and vessel nozzle connections.