Non-standard Flanges
- Custom Engineering Flexibility: Designed and machined strictly according to customer drawings, samples, and project requirements.
- Reliable Performance: Tailored sizes, pressure classes and sealing faces provide safe, leak-tight connections in demanding conditions.
- Precision Dimensional Control: To guarantee accuracy and consistency, a three-coordinate measuring device examines important dimensions.
- Fast Sample Verification: 2pcs free samples for non-standard flanges help you validate fit and performance before mass production.
- Short Lead Time: Typical production lead time around 20 days to support urgent project schedules.
Technical Specifications
| Item | Specification |
| Product Name | Non-standard Flanges |
| Design Basis | Customer drawings, 3D models, or supplied samples |
| Size Range | Bore, OD, thickness, and drilling pattern customized as required |
| Pressure Rating | According to the project requirement (e.g., PN / Class ratings specified by the customer) |
| Facing Types | RF, FF, RTJ, tongue & groove, male–female, or special faces on request |
| Material Options | Carbon steel, stainless steel, alloy steel, duplex/super duplex, and other special alloys |
| Dimensional Inspection | 3-coordinates measuring machine for critical dimensions and geometric tolerances |
| Sample Policy | 2pcs free samples for non-standard flanges (freight to be discussed with customer) |
| Production Lead Time | Approx. 20 days after order/drawing confirmation |
| Packaging | European-standard wooden cartons or crates, customized labeling available |
| Standards Reference | Manufactured to match DIN / EN / ASME / GB or project-specific standards where applicable |
Customization Options
- Custom flange outer diameter, thickness, bore size and drilling pattern.
- Special sealing faces (RTJ, tongue & groove, male–female, step faces, etc.).
- Choice of materials and grades to match media, temperature and corrosion requirements.
- Tailored pressure ratings and design codes according to customer specifications.
- Optional heat treatment and certification (NDT reports, mechanical tests, material certificates).
- Custom surface finishes: machining finish, anti-rust oil, painting, galvanizing, or other coatings.
Applications
- Special piping connections where standard flange dimensions do not fit.
- Custom process equipment nozzles and manways.
- Retrofit or modification projects in existing plants.
- High-corrosion or high-temperature lines requiring special materials or faces.
- Skid packages, test rigs, and engineered-to-order systems.
- Offshore, petrochemical, power generation, and general industrial piping projects needing bespoke flange solutions.
Raw Materials
We produce and purchase raw materials strictly according to customer requirements, ensuring full compliance with project specifications, mechanical properties, and international standards.
Main steel grades we produce:
Steel Grade | Standards | Classification | Products |
1.4301, 1.4307, 1.4401, 1.4404, 1.4541, 1.4871 | EN 10222-5 | L | Forged flanges and Forged parts |
F304, F304L, F316, F316L, F321, F316T, F310, F904L | ASTM A182 | L | Forged flanges and Forged parts |
F51, F53, F55, F60 | ASTM A182 | L | Forged flanges and Forged parts |
LF2 | ASTM A350 | V | Forged flanges and Forged parts |
F11, F22 | ASTM A182 | V | Forged flanges and Forged parts |
A105 | ASTM A105 | N | Forged flanges and Forged parts |
CNC Machining Capabilities
We operate multiple machining lines and CNC centers engineered to deliver tight tolerances, superior surface finishes, and consistent quality for complex forged components.
Equipments and Quantities | ||
Item No. | Equipments | Quantities |
1 | Ramp CNC lathe | 6 |
2 | Normal lathe | 8 |
3 | Machining center | 4 |
4 | CNC lathe | 10 |
Inspection & Quality Control
To ensure the high quality of non-standard flanges, we are equipped with professional testing and inspection systems:
- 3D Measurement Equipment
- Ultrasonic Cleaning Machine
- Physical & Chemical Testing
- Dimensional Inspection
Packaging for Non-Standard Flanges
We provide protective packaging options according to customer needs:
- Anti-rust treatment
- Plastic film wrapping
- Wooden cases
- Wooden pallets
- Custom packaging available
Why Choose Boberry
Complete In-House Manufacturing
Integrated forging, heat treatment, machining, and inspection ensure stable quality, faster lead times, and full control over every production stage.
European-Market Proven Quality
Long-term supply to Germany, Austria, Switzerland, and Nordic countries demonstrates our ability to meet strict technical standards and customer expectations.
Custom Engineering Support
Tailor-made stainless-steel parts based on your drawings, with trial samples available to validate design, performance, and fit before full-scale production.