Which workpieces and process route should be reviewed?
Valve and fitting workpieces often combine threaded ports, sealing faces, intersecting holes and datum relationships. The machine route should follow the drawing, material, annual volume, fixture access and inspection plan rather than a generic model recommendation.
- Valve bodies with multiple ports and sealing faces.
- Brass or steel plumbing fittings with repeated threads and chamfers.
- Manifold-style components with intersecting holes and deburring risk.
- Fluid-control parts that require documented leak or dimensional inspection.
Which inputs change the machine route?
| Port and face geometry | Confirm access from each side, datum relationships, sealing faces and thread directions. |
|---|---|
| Volume and takt target | Compare vertical machining, drilling and tapping, and other verified CNC routes only after annual volume and operation sequence are known. |
| Material and blank | Provide grade, casting or forging condition, stock allowance and hardness information. |
| Inspection | Define thread, sealing-face, position, burr and leak-test requirements before fixture design. |
What process sequence should buyers confirm?
- Confirm datums, blank condition and workholding access.
- Map turning, facing, drilling, tapping, chamfering and deburring operations.
- Decide whether one CNC setup, multiple fixtures or a drilling and tapping route is appropriate.
- Define in-process checks and final dimensional or leak-test acceptance.
- Review automation, chip control, coolant, guarding and service needs.
Which Tiezheng machine routes should be compared?
- Vertical machining centers
- Gantry machining centers for larger valve-body fixtures
- Drilling and tapping centers
What visible evidence is available?
The image and video below verify visible VT640 machine context. They do not prove valve-specific cycle time, tolerance, leak performance or customer acceptance.
Review the VT640 drilling and tapping center video
Which quality risks should be discussed?
| Sealing-face relationship | Define flatness, finish and datum requirements on the drawing. |
|---|---|
| Port position and thread | Provide positional tolerance, thread standard and gauge method. |
| Intersecting-hole burrs | Specify deburring and cleanliness expectations. |
| Leak integrity | Define the test medium, pressure, duration and acceptance record if required. |
What should buyers send with the RFQ?
- 2D/3D drawing with datums, ports, threads and sealing faces.
- Material grade and casting, forging or bar-stock condition.
- Annual volume, batch size and target cycle time.
- Thread, surface, positional, burr and leak-test requirements.
- Loading, automation, inspection, destination and service expectations.
Buyer questions before machine selection
Which current Tiezheng route should be reviewed first?
Start with the current machining-center and drilling-and-tapping routes, then confirm the final process against the drawing, fixtures, volume and acceptance plan.
Can one machine image prove the application?
No. It verifies visible machine context only. Drawings, tooling, fixtures, trials and acceptance criteria determine application fit.
Which material should be assumed?
None. Brass, steel, cast iron, stainless and aluminum routes require different tooling and process review.
What is the first useful RFQ file?
A controlled drawing with port, thread, sealing-face and datum information.
What is the next step?
Use the RFQ checklist to organize the drawing and production inputs, compare the linked machine routes, and then contact Tiezheng for an engineering review.