CNC Machining & Post-Weld Machining Services
Every welded fabrication distorts a little - the heat pulls, the plate relaxes, and the "flat" surface you drew on paper arrives with 2mm of wander. For a bolt-on assembly, that wander is where field problems start: shims nobody planned, misaligned bores, and a pump that vibrates because its base was never actually flat. Machining after welding is not an extra step. It is the step that turns a fabricated box into an engineered surface.
We machine welded fabrications and components to ±0.01mm on critical features with surface finishes from Ra 0.8 to 3.2μm. Because machining sits under the same roof as cutting, welding and coating, a welded base plate can go from raw weld to machined bearing face without leaving the factory - and without the tolerance debate between shops.
Machining Capabilities
| Item | Specification |
|---|---|
| CNC milling | 3/4-axis, table sizes per project |
| CNC turning | Diameter per project (shafts, flanges, bosses) |
| Machining tolerance | ±0.01 mm on critical features |
| Surface finish | Ra 0.8 – 3.2 μm |
| Post-weld machining | Bearing faces, bolt pads, flanges and bore alignment |
| Verification | First-article dimensional report, CMM sampling |
Materials We Machine
Carbon steel, stainless steel (304/316L), aluminum, and alloy steels. We machine as-cast, as-forged, and welded assemblies - including parts that first went through our laser cutting and robot welding lines, so the whole fabrication history is known and documented.
Why Post-Weld Machining Pays for Itself
Machining a weldment's mounting faces after welding does two things: it removes the distortion welding introduced, and it gives your assembly line a true datum it can trust. For equipment bases, pump pedestals and drive frames, that means no field shimming, no line boring, no "send it back to the fabricator" phone calls. One shop, one datum, one responsibility.
Typical Applications
Pump & process equipment: machined pump bases, bearing housings, flange faces
Agricultural machinery: machined bosses and pivot points on welded frames
Structural: machined bearing plates and connection pads for steel assemblies
Marine: machined deck fittings and mounting surfaces on welded sub-frames
Why Buyers Choose Us for Machined Parts
A machined face is only as good as the fabrication under it. With welding and machining in the same shop, we machine against the distortion we actually produced - and we verify it with measured values, not assumptions. ISO 9001, 20 years OEM, one closed loop.
Quality Control on Machined Parts
First-article full dimensional report per batch, in-process inspection, and CMM sampling on critical features. Every part ships with measured values on request - not an assumption that the machine "should have" hit tolerance.
How an Order Moves Through Our Shop
Send the drawing with critical surfaces marked → we confirm machining strategy, datum selection and achievable tolerance within 24 hours → first-article full dimensional report on your key features → batch production with in-process inspection → CMM sampling and measured values shipped with the parts. Marking the surfaces that matter up front is what keeps post-weld machining fast and honest.
Related Fabrication Services
Laser cutting - precision blanks before machining
Robotic welding - weldments ready for post-weld machining
Surface coating - protection after machined features are verified
Machining FAQ
Q: Can you machine welded fabrications?
A: Yes - post-weld machining of bases, flanges and mounting faces is a core capability, not a special request.
Q: What tolerance can you hold?
A: ±0.01mm on machined critical features, verified on first article.
Q: Do you machine before or after galvanizing?
A: HDG parts are machined before coating, with threads and precision faces masked or re-cut after - we plan the sequence per part.
Q: Can you combine machining with welding and coating?
A: Yes, all in-house: cut, weld, machine, coat. Send one drawing, one supplier, one responsibility.
Q: What is the lead time?
A: Prototype 24–72 hours; production 7–15 days depending on volume and finishing.
Need a weldment that must actually fit? Send the drawing with critical surfaces marked - we'll quote machining and verification within 24 hours.