Subcontract precision machining · Fenggang, Dongguan, China
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Marine & Offshore

Shafts, sleeves, valve and sealing components for marine and offshore equipment, in stainless, bronze and nickel alloys.

Marine and offshore parts are specified for two things: they have to survive the environment, and they have to seal. Seawater makes material choice non-negotiable — duplex and 316 stainless, bronze and nickel alloys are normal work here, not exceptions — and a seal that is a few microns out will fail long before the metal does.

We machine shafts, sleeves, bushings, valve and sealing components for deck and subsea equipment, and we finish the critical surfaces by grinding and EDM in the same building rather than sending them out. On a long shaft that needs a ground bearing journal and a hardened wear surface, that keeps the whole datum chain in one shop.

What this sector checks is material documentation and whether the sealing surfaces are genuinely round. Material certificates traceable to the heat, dimensional reports with the actual measured values, and bores ground for roundness rather than simply cut to size are what we supply.

Typical parts

What we make for this sector.

Shafts, sleeves and bushings

Valve bodies, stems, seats and sealing parts

Pump and drive components

Hydraulic cylinder and actuator parts

Deck-equipment structural and mounting components

Corrosion-resistant parts in duplex and 316 stainless

What matters here

The four things this industry actually checks.

Corrosion-resistant materials

Duplex and 316 stainless, bronze, nickel alloys — bought with certificates.

Sealing surfaces

Bores and faces ground for roundness and finish, not just turned to size.

Hardened wear surfaces

EDM and grinding after heat treatment, sequenced correctly.

Documentation

Heat-traceable material certificates and dimensional reports with the shipment.

Capabilities applied

Processes this sector usually calls for.

CNC Turning

Turning, mill-turn and small-to-medium batch production of round parts.

CNC Milling

3-, 4- and 5-axis milling of complex parts, pockets, contours and fixtures.

Gear Hobbing & Shaping

Spur, helical and internal gears cut on hobbing and shaping machines.

OD Grinding

External cylindrical grinding for roundness, straightness and surface finish.

ID Grinding

Internal grinding of bores, sleeves and bearing seats.

Wire EDM

Wire EDM for sharp internal corners, hardened material and thin walls.

Questions

What buyers in this sector ask us.

Do you sign NDAs before receiving drawings?
Yes. Send yours and we will sign it before any file changes hands. Customer names and part numbers are never published on this site.
Can you supply the documentation this sector requires?
First-article inspection reports, material certificates and dimensional reports are issued as standard, from the same facility that machined the parts. Where a sector asks for something more specific — a hardness record on heat-treated parts, a defined sampling plan, or your own report format — tell us at quotation stage and we will confirm what we can supply before you commit to anything.
Do you work from supplied castings, forgings or bar?
Yes. We machine customer-supplied material and will inspect it on receipt so that any defect is identified before we cut, not after.

Send us a drawing. Get an engineering answer, not a price list.

Tell us the part, the material and the quantity. An engineer reviews your drawing and replies within one working day — usually with a suggestion on how to make it cheaper.