Custom Marine Parts From Prototype to Production
Baosheng is a marine parts manufacturer providing precision CNC machining for custom metal and plastic components.
We manufacture valves, pump housings, shafts, couplings, brackets, enclosures and replacement parts according to your CAD files and drawings.
- One-off parts and production batches
- 3-axis, 4-axis and 5-axis machining
- Metals and engineering plastics
- DFM review before production
- Inspection reports available
- NDA and secure file handling
ISO 9001:2015
Certified Manufacturing Facility
Down to ±0.01 mm
Precision tolerance
Prototype to Repeat
Production Support
CMM, FAI and Material
Documentation Available
Note:Capabilities depend on material, geometry, quantity, finishing and inspection requirements.
Custom Marine Parts
Baosheng manufactures precision parts for marine equipment, shipbuilding, vessel repair and fluid-control systems.
Machining Services
Our marine CNC machining services support simple components, complex multi-surface parts and precision rotational parts.
CNC Milling
CNC Turning
5-Axis Machining
Sheet Metal
Rapid Prototyping
What Marine Materials We Supply?
Select materials according to corrosion exposure, mechanical load, weight and operating conditions.
Stainless Steel
304, 316, 316L, 17-4PH and other specified grades. Commonly used for valve bodies, shafts, fittings, flanges and deck hardware.
Aluminum
5052, 5083, 6061 and other specified alloys. Suitable for lightweight housings, panels, brackets, covers and equipment structures.
Titanium
Used for specialized components requiring high strength, low weight and corrosion resistance.
Bronze and Brass
Suitable for selected bushings, bearings, fittings, valve parts and wear components.
Engineering Plastics
POM, nylon, PEEK, PTFE, PPS, HDPE, PC and other specified plastics. Suitable for guides, bushings, insulators, covers and low-friction components.
Not sure which material to use?
Send us the operating environment and application requirements for engineering review.
Surface Finishes About Machining Parts
Available finishing options include:
- Passivation
- Electropolishing
- Anodizing
- Conversion coating
- Powder coating
- Wet painting
- Nickel plating
- Polishing
- Brushing
- Bead blasting
- PTFE coating
Surface treatment can affect dimensions, threads, sealing faces and electrical contact areas. Identify critical features in your drawing before quotation.
Factory Manufacturing
Custom marine parts are produced using Baosheng’s machining, fabrication and inspection capabilities.
Engineering Review
Our engineers review materials, tolerances, machining access and critical features before production.
Flexible Quantities
Support is available for individual parts, prototypes, pilot batches and repeat production.
Complex Parts
Multi-axis machining supports internal passages, angled features, precision bores and sealing surfaces.
Quality Records
Material certificates, dimensional reports, CMM reports and first-article reports are available when requested.
Secure Projects
Drawings and technical files are handled confidentially. NDAs are available.
±0.005 mm
Critical feature tolerance
0.02 mm
Runout requirement
Ra 0.8–1.6 μm
Machined surface finish
Result
The completed shaft met the agreed dimensional, runout and surface requirements and was delivered for assembly and functional validation.
The same process can support propeller shafts, couplings, bearing sleeves and other marine propulsion components.
Typical Marine Shaft Project
Part
Custom marine drive shaft
Material
316 stainless steel
Quantity
Prototype and low-volume batch
Process
CNC turning, keyway milling and precision inspection
Finish
Passivation
Project Challenge
The drive shaft required accurate bearing seats, coupling interfaces and keyway alignment while maintaining low runout across the full machined length.
Because the component would operate in a wet and corrosive environment, material selection and surface treatment were also critical.
Manufacturing Solution
- CNC turning produced the main shaft diameters and bearing seats
- Common datums maintained alignment between critical features
- CNC milling completed the keyway and connection features
- Controlled machining reduced distortion and vibration
- Passivation improved the corrosion resistance of the finished surface
Quality Control For Custom Marine Parts
Every project is reviewed and inspected from material verification to final shipment.
Design Review
We check the material, geometry, tolerances, finish and critical features before production.
First Article
An initial part can be inspected before the remaining batch is manufactured.
Process Inspection
Critical dimensions are checked during machining to identify deviations early.
Final Inspection
Completed parts are inspected for dimensions, surface finish and appearance before shipment.
Available inspection
CMM · Material verification · Height gauges · Thread gauges · Surface testing
Available documents
Dimensional reports · CMM reports · First-article reports · Material certificates · Certificates of conformity
The Ordering Process For Custom Marine Parts
1. Upload
Send your CAD file or drawing with the required material, quantity and finish.
2. Review
Our engineers review manufacturability, tolerances and inspection requirements.
3. Confirm
Approve the quotation, specifications and delivery schedule.
4. Ship
Your parts are manufactured, inspected, packaged and shipped.
Marine Parts FAQ
Can you manufacture one part?
Yes. Marine CNC machining is suitable for one-off replacement parts, functional prototypes and small production quantities.
Can you use a sample?
In some cases, we can evaluate production using an existing sample. The customer must have the legal right to reproduce the component.
What materials are available?
Available options include stainless steel, aluminum, titanium, bronze, brass and engineering plastics.
Final material selection depends on corrosion exposure, load, temperature and operating conditions.
What tolerances are possible?
Available tolerances depend on the material, geometry, feature size, part dimensions and inspection method.
Send your drawing so our engineers can evaluate the critical dimensions.
Can you provide reports?
Yes. Material certificates, CMM reports, dimensional reports and first-article reports are available when specified before production.
Can you meet marine standards?
Classification or third-party requirements must be identified during quotation.
We will review the required material traceability, testing, documentation and inspection before accepting the order.
How fast can you deliver?
Lead time depends on part complexity, material, quantity, finishing and inspection requirements.
A confirmed delivery schedule will be included in the quotation.
Can you sign an NDA?
Yes. Baosheng can sign an NDA before you share confidential drawings or project information.
Need a marine parts manufacturer？
Upload your CAD files.Our engineering team will review your custom marine parts and recommend an appropriate manufacturing solution.
Visit us
308, Building A, Chang'an Zhigu, Annex Building, No. 199 Shajiang Road, Xitou Community, Songgang Street, Bao'an District, Shenzhen, Guangdong, China.
Email Us
in**@*********nd.com
Call Us
+86 17727904392
🔒 An engineer will review your files and reply with technical questions, DFM recommendations, estimated pricing and lead time.