Finished Precision Machined Flanges
- High Precision: CNC-machined with 0.02mm tolerance for superior fitting.
- Superior Surface Finish: Smooth surface ideal for high-pressure connections.
- Customizable Dimensions: Tailored sizes, thicknesses, and face types available.
- Flexible Shipment Options: Samples available, fast shipping within 15–30 days.
- Mass Production Capacity: 60-80 tons/month production capability to meet large orders.
Technical Specifications
| Parameter | Specification |
| Brand | BOBERRY |
| Product Origin | China |
| Material | Stainless Steel, Carbon Steel, Alloy Steel (Custom) |
| Machining Type | CNC Machining |
| Tolerance | Minimum 0.02mm |
| Size Range | Customizable per customer requirements |
| Supply Capacity | 60-80 Tons/month |
| Delivery Time | 15-30 Days |
| Samples Available | 2 Free Samples |
| Coating Options | Custom Coatings Available (e.g., black paint, galvanizing) |
| Standards | ISO, ASME, ASTM (Customizable) |
Customization Options
- Material Grades: Choose from a range of materials, including stainless steel, carbon steel, and alloy steel based on your application.
- Size and Dimensions: Custom sizes can be manufactured to meet specific application needs, from standard to custom diameters.
- Coating & Finish: Available in various coatings, including black paint, galvanizing, or other custom finishes.
- Quantity: Flexible orders, from sample production to large-scale orders.
- Machining Features: Precision machining and customized features, including bolt holes and flange types, can be adjusted based on customer requests.
Applications
- Petroleum Industry: Used in pipelines, valves, and other critical infrastructure components.
- Fertilizer Industry: Ideal for high-temperature and high-pressure systems in fertilizer plants.
- Power Generation: These flanges are applied in steam and gas turbines, boilers, and other power plant equipment.
- Marine: Because of its resistance to corrosion, it is dependable for seawater pipes and other maritime applications.
- Chemical & Petrochemical Industry: Essential in refineries and chemical plants for secure and durable connections.
- Shipbuilding: Ensures strong, long-lasting connections in shipbuilding and offshore platforms.
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.
