We machine production parts for Oil and Gas Equipment customers, from single prototypes through to repeat batches of tens of thousands. Typical work covers valve bodies, wellhead components and chokes, usually in 4140 or 17-4 PH.
What makes Oil and Gas Equipment different from general machining is not the geometry — it is the documentation and the failure modes. The parts that come back are the ones where sour service compliance limits hardness and material selection was not designed out at the start.
Parts we machine for Oil and Gas Equipment
- Valve bodies
- Wellhead components
- Chokes
- Flanges
- Downhole tools
Materials we run for Oil and Gas Equipment
- 4140
- 17-4 PH
- Inconel 718
- Hastelloy C276
- Monel 400
Standards and documentation
- API 6A, API 16C, NACE MR0175 / ISO 15156
Tell us which standard applies and which documents you need with the shipment. Dimensional reports, material certificates, certificates of conformity and first article inspection reports are all available, and it is much cheaper to agree them before the batch runs than to reconstruct them afterwards.
Where Oil and Gas Equipment projects usually go wrong
- Sour service compliance limits hardness and material selection
- Lead times on exotic alloys drive the whole schedule
Tolerance and finish we hold
| Requirement | Typical capability |
|---|---|
| General tolerance | H7/H8 fits, Ra 0.4 um on sealing faces, hardness capped by NACE |
| Surface finish | Ra 0.4 to 3.2 um |
| Material certification | EN 10204 3.1 on request |
| Inspection | Dimensional report, CMM report, FAIR |
| Packaging | VCI and desiccant for steel, individual wrap for cosmetic faces |
Frequently asked questions
Do you have experience with Oil and Gas Equipment parts?
Yes. Typical parts we run are valve bodies and wellhead components. We can share the process route and inspection approach for a comparable part before you commit.
Which materials do you recommend for Oil and Gas Equipment?
4140, 17-4 PH, Inconel 718, Hastelloy C276. The right choice depends on which of corrosion, weight, strength and cost is the binding constraint, and we will say so plainly rather than quoting the most expensive option.
What documentation do you provide?
A dimensional report and a certificate of conformity as standard. Material certificates, CMM reports, FAIR and PPAP submissions are available when your quality system requires them.
What tolerances do you hold for Oil and Gas Equipment parts?
H7/H8 fits, Ra 0.4 um on sealing faces, hardness capped by NACE is typical for the industry. Tighter tolerance on individual features is possible and is quoted against the specific feature rather than the whole part.
Related pages
- Industries — the full index for this section.
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- CNC Machining for Telecom and RF Housings
- CNC Machining for Marine and Offshore Parts
- CNC Machining for Optical and Photonics Hardware
- Instant CNC quote
- Tolerance quick reference
- Frequently asked questions
Get a price for your part
Send a STEP file and a drawing with tolerances, material and quantity. We quote within one working day and machine in our own facility in Shenzhen — milling, turning, EDM, grinding and finishing under one roof, no trading middleman.
Start an instant quote or send your drawings directly. English-speaking engineering support, DFM feedback before you commit to a batch.