EN 10204 3.1 Certified Flanges
- EN 10204 3.1 Certification: Each flange is delivered with a 3.1 material test certificate for full chemical and mechanical traceability.
- High Surface Quality: Smooth, carefully machined surfaces without scratches support reliable sealing and professional appearance.
- Precision Tolerances: Dimensional tolerance controlled within 0.05 mm to ensure accurate fit-up and consistent assembly.
- Optimized Size & Weight Range: Diameter ranges from 50 mm to 1200 mm, with single flange weight no more than 80 kg.
Technical Specifications
| Item | Specification |
| Product Name | EN 10204 3.1 Certified Flanges |
| Certification Standard | EN 10204 Type 3.1 Material Test Certificate |
| Diameter | 50 mm – 1200 mm |
| Maximum Unit Weight | ≤ 80 kg per flange |
| Dimensional Tolerance | Within 0.05 mm (according to the approved drawing) |
| Surface Condition | Smooth machined surface, no visible scratches |
| Main Materials | Stainless steel, super duplex steel, F55, F60, 904L |
| Sample Policy | 2 pcs free samples available for EN 10204 3.1 Certified Flanges |
| Production Basis | Manufactured strictly according to customer drawings and technical requirements |
| Typical Use | Critical piping and equipment connections requiring certified and traceable flange materials |
Customization Options
- Custom flange diameters, thicknesses, and bore sizes according to project drawings.
- Various flange types: welding neck, slip-on, blind, lap joint, and others on request.
- Different sealing faces: RF, FF, RTJ, tongue & groove, and male–female, as per specification.
- Drilling patterns are customized to match bolt circles, hole diameters, and bolt quantities.
- Pressure classes and standards (e.g., ASME/ANSI, DIN, EN) are defined by customer requirements.
Applications
- Oil & gas pipelines and process manifolds
- Petrochemical and chemical processing plants
- Offshore and marine piping systems
- Power generation and high-temperature service lines
- Desalination and water treatment facilities