Turning Machined Parts
- Wide Material Range: Carbon steel, alloy construction steel, stainless steel, alloy tool steel, and other special materials available.
- Complex Geometries: Capable of producing steps, tapers, grooves, threads, and contoured profiles on rotational parts.
- Process Flexibility: Rough, semi-finish, and finish turning can be combined with drilling, boring, threading, and grooving.
- Stable Quality: Controlled rough and finish operations minimize residual stress and deformation.
Technical Specifications
| Item | Specification |
| Product Name | Turning Machined Parts |
| Machining Process | Rough turning and finish turning on CNC / conventional lathes |
| Typical Features | Steps, tapers, grooves, threads, holes, bores, contoured surfaces |
| Dimensional Accuracy | According to customer drawings and tolerance requirements |
| Surface Quality | Defined by finish turning; Ra and tolerance per customer specification |
| Regular Materials – Carbon Steel | 20#, 25#, 30#, 35#, 45#, 55#, Q235, Q345, 16Mn, 50Mn, 60Mn, A105 |
| Regular Materials – Alloy Construction Steel | 40Cr, 25CrMo, 30CrMo (4130), 35CrMo, 42CrMo (4140), 38CrMoAl, 20CrMnMo, 40CrMnMo, 20CrMnTi, 40CrNiMoA (4340), 30Cr2Ni2Mo, 34CrNi3Mo, 24Cr2Ni2Mo, etc. |
| Regular Materials – Stainless Steel | 304, 304L, 316, 316L, 2205, 410, 1Cr17Ni2, 1Cr13, etc. |
| Regular Materials – Alloy Tool Steel | Cr12MoV (D2), 5CrMnMo, H13 (4Cr5MoSiV1), etc. |
| Drawing / File Formats | According to customer requirements (e.g. PDF, DWG, STEP) |
| Typical Industries | Aerospace, military, shipbuilding, petroleum / chemical, energy, transportation, pressure vessel |
Customization Options
- Geometry & Size: Custom diameters, lengths, wall thickness and step dimensions fully based on customer drawings.
- Machining Strategy: Choice of rough, semi-finish and finish turning sequences to balance cost and accuracy.
- Features & Details: Grooves, threads (internal/external), tapers, keyways, holes, bores and complex contours.
- Material Selection: Carbon steel, alloy construction steel, stainless steel, alloy tool steels and special grades on request.
- Tolerance & Surface Roughness: Tailored dimensional tolerances and Ra values to meet functional and sealing requirements.
- Heat Treatment & Additional Operations: Normalizing, quenching and tempering, nitriding, plus drilling, milling, boring or grinding if needed.
Applications
- Aerospace components: shafts, sleeves, rings and structural parts.
- Military projects: precision turning parts for defense equipment.
- Shipbuilding: marine shafts, couplings and various rotational parts.
- Petroleum / Chemical industry: valve components, connectors, flanges and pump parts.
- Energy industry: turbine, generator and power-transmission components.
- Transportation: axle, hub and drivetrain parts for vehicles and rail.
- Pressure vessel and machinery: nozzles, end fittings, drive shafts and custom rotational elements.
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.
