Customized Flanges with Complex Shapes
- Tailor-Made Design: Produced strictly according to customer drawings, models, or samples.
- Wide Size Range: Custom outer diameters, thicknesses, and bore sizes for small to oversized flanges.
- Complex Geometry: Slots, keyways, special grooves and multi-step profiles can be integrated in one piece.
- Precision Machining: CNC turning, milling and drilling ensure tight tolerances and smooth sealing faces.
- Flexible Standards: Compatible with ANSI, ASME, DIN, JIS, EN, GOST or fully non-standard designs.
Technical Specifications
| Item | Specification |
| Product Name | Customized Flanges with Complex Shapes |
| Design Basis | Customer drawings, 3D models, or approved samples |
| Size Range | Custom OD, ID and thickness (e.g. small to large diameters) |
| Pressure Class | According to project requirement (e.g. Class 150–2500, PN6–PN420, etc.) |
| Standards Supported | ANSI / ASME B16.5, B16.47, DIN, EN 1092-1, JIS, GOST, or non-standard |
| Flange Types | Welding neck, slip on, socket weld, threaded, blind, lap joint, special profiles |
| Materials | Carbon steel, stainless steel, alloy steel, duplex / super duplex, special alloys |
| Machining Capability | CNC turning, milling, drilling, threading, groove machining, facing |
| Surface Finish | Custom Ra on sealing faces; rust-preventive coatings on request |
| Dimensional Tolerance | According to customer tolerance class or internal machining standard |
| Testing & Documentation | Material certificates, dimensional reports, NDT (UT/MT/PT) on request |
| Sample Policy | Sample or trial pieces available for design verification |
Customization Options
- Custom OD/ID, thickness and hub geometry based on drawings.
- Choice of flange type: WN, SO, SW, threaded, blind, lap joint, or fully special shapes.
- Personalized bolt-hole pattern: number, diameter, PCD, slotted or tapped holes.
- Tailored sealing faces: RF, FF, RTJ, tongue & groove, male/female, or special grooves.
- Material selection to match pressure, temperature and corrosion requirements.
Applications
- Oil & gas pipelines, manifolds and wellhead equipment
- Chemical and petrochemical plants (reactors, columns, heat exchangers, custom nozzles)
- Power generation (boilers, turbines, condensers, high-pressure piping)
- Refinery and offshore platforms requiring special corrosion-resistant flanges
- Shipbuilding and marine systems for seawater and fuel lines
- Water treatment and desalination plants
- Food, beverage and pharmaceutical equipment with hygiene or cleanability requirements
- General mechanical and pressure vessel projects needing non-standard connections
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.