We machine production parts for Marine and Offshore customers, from single prototypes through to repeat batches of tens of thousands. Typical work covers propeller shaft components, deck fittings and winch parts, usually in 316L or Titanium Grade 2.
What makes Marine and Offshore 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 chloride pitting and crevice corrosion, not strength, set the material choice was not designed out at the start.
Parts we machine for Marine and Offshore
- Propeller shaft components
- Deck fittings
- Winch parts
- Sea water pump housings
Materials we run for Marine and Offshore
- 316L
- Titanium Grade 2
- Monel 400
- Bronze 932
- Hastelloy C276
Standards and documentation
- DNV, ABS, Lloyd’s Register for classed vessels
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 Marine and Offshore projects usually go wrong
- Chloride pitting and crevice corrosion, not strength, set the material choice
- Galvanic isolation between dissimilar metals
Tolerance and finish we hold
| Requirement | Typical capability |
|---|---|
| General tolerance | +/-0.05 mm typical; H7 fits on bearing seats |
| 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 Marine and Offshore parts?
Yes. Typical parts we run are propeller shaft components and deck fittings. We can share the process route and inspection approach for a comparable part before you commit.
Which materials do you recommend for Marine and Offshore?
316L, Titanium Grade 2, Monel 400, Bronze 932. 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 Marine and Offshore parts?
+/-0.05 mm typical; H7 fits on bearing seats 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.
- CNC Machining for Oil and Gas Equipment
- CNC Machining for Agricultural Machinery
- CNC Machining for Textile Machinery
- CNC Machining for Telecom and RF Housings
- 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.