Disc / Flange Parts
Flanges, end caps, connecting discs, gaskets
- Material 20# steel, 45# steel, SS 304, SS 316L, Al 6061
- Process CNC turning, CNC milling, drilling, tapping
- Tolerance ±0.02mm
- Lead Time 10-20 days
Product Details
We specialize in multi-cavity hydraulic flanges, claw end caps, branded end caps, and tapped-boss connection flanges — turning, milling, drilling, tapping, laser engraving, and sealing-face lapping in one process. PCD ±0.05mm, flatness 0.05mm, runout 0.02mm.
Applications
- Pipe flange connectors
- Motor end caps
- Gearbox connecting plates
- Hydraulic system flanges
- Pump end covers
Typical Size Range
- Min
- Φ50mm
- Max
- Φ600mm
- Other
- Thickness ≤80mm
Common Materials
| Material Grade | International Standard | Typical Application |
|---|---|---|
| 20# Steel | AISI 1020 | Carbon steel flanges, low-pressure piping |
| 45# Steel | AISI 1045 | Medium-pressure flanges, structural discs |
| SS 316L | AISI 316L | Chemical, food-grade sealing |
| Aluminum 6061 | AA 6061 | Lightweight end caps |
Process Capabilities
- CNC turning (OD, ID, face in one setup)
- CNC milling (cavities, special holes, seal faces)
- Drilling and tapping (M6-M48, 6H)
- Counterbores / bosses (PCD ±0.05mm)
- Laser engraving (LOGO / serial number)
- Sealing-face lapping (RF, FM, TG, RJ)
Disc / Flange Parts Part Gallery
Finished parts and typical process features (4 photos)
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04 Frequently Asked Questions
What flange sealing face types do you support?
We support RF (raised face), FM (male-female), TG (tongue-groove) and RJ (ring joint) — per ASME B16.5, EN 1092-1 and GB/T 17241.
Can bolt holes be machined to customer position?
Yes — any PCD, hole count and distribution; just provide the hole layout or a template.
What info is needed for a quote?
① OD, ID, thickness ② bolt count and PCD ③ seal face type ④ material ⑤ quantity. Drawings in PDF/STEP are best.
Detailed Content
Disc / Flange Parts
Disc and flange parts are core components in piping, transmission and connection systems for fluid transport, mechanical drive and structural joints.
Core Process Capabilities
- Multi-cavity milling: 8 kidney cavities + 4 center bores machined in one pass with positional accuracy ±0.05mm — suitable for compact hydraulic valve blocks and multi-port flanges.
- Claw / ear forming: 4 ears formed in one setup, avoiding the secondary positioning errors of split machining — face turning Ra0.8, runout ≤0.02mm, ensuring true concentric assembly.
- Counterbores and tapped bosses: 8 evenly spaced counterbores for flush bolt mounting and 6 tapped bosses integrated with 4 thru holes; thread accuracy 6H for direct locking with mating screws.
- Brand laser engraving: end-face LOGO / serial numbers laser-engraved to a controllable depth of 0.1-0.3mm with no wear over time — ideal for OEM branded end caps.
- Flatness / sealing-face lapping: sealing faces lapped to flatness ≤0.05mm, combined with RF / FM / TG / RJ standard face types to meet ASME B16.5 / EN 1092-1 sealing requirements.