Custom metal parts
The challenge. You need corrosion-resistant, high-precision metal parts for high-pressure, high-temperature or sour (H2S / CO2) service — and standard, off-the-shelf components won’t survive the conditions or hold the tolerances.
Coretest designs and machines custom metal parts and high-pressure components in-house, in the corrosion-resistant alloys these environments demand. From a single replacement component to a prototype or a small production run, every part is built to the real pressure, temperature and chemistry of your application — and inspected before it ships.

Machining & fabrication capabilities
3-, 4- & 5-axis CNC milling
Complex geometries and high-pressure component bodies machined to tight tolerances.
CNC turning & mill-turn
Shafts, closures, end caps, fittings and rotationally-symmetric parts.
High-pressure fabrication
Pressure-bearing vessels, cells and closures built and tested for HPHT service.
Welding, brazing & assembly
Sub-assemblies and finished modules, ready to integrate.
Prototyping
One-off prototypes to prove a design before production.
Small production runs
Repeatable small batches with consistent quality.
Materials we machine
Corrosion-resistant & high-pressure alloys — for aggressive, sour and high-pressure environments:
Other metals & engineering plastics:
Precision & quality control
- Tight tolerances, down to ±0.01 mm
- CMM dimensional inspection
- Material certificates and traceability
- Pressure and leak testing of pressure-bearing parts
- Conformance to recognised API / ASTM methods
Finishing & surface treatment
Passivation, electropolishing and polishing; anodising, plating and protective coatings — selected for the service environment, in-house or through qualified partners.
What we make
Core holders & components
Core-holder bodies, sleeves, end plugs and internals.
High-pressure cells & vessels
Reactor and cell bodies, closures and pressure caps.
Valve bodies, manifolds & fittings
Flow-path components for test rigs and systems.
Flow-cell & pump components
Wetted parts in corrosion-resistant alloys.
Industries & applications
From drawing to part
Enquiry
Send a drawing, a sample or the operating conditions.
Design & DFM review
We confirm geometry, material and manufacturability.
Machining
We cut, fabricate and assemble in-house.
Inspection & testing
CMM, material certs and pressure testing as required.
Delivery
Part delivered ready to fit and integrate.