HVOF · Internal Diameter Coatings

HVOF Coatings for Internal Diameters. Finally.

Purpose-built HVOF technology for bores, cylinders, and internal surfaces that legacy systems can't reach. ESG-compliant. Field-proven. Ready to validate on your parts.

The challenge

Outside Diameters - No Problem. Inside Diameters - That's Where It Gets Hard.

Thermal spray technologies were never designed for precision inside narrow bores. Legacy HVOF systems can't physically access diameters under 4–5 inches. Plasma spray doesn't deliver the coating density required. And hard chrome, the convenient workaround, is being phased out globally under REACH and OSHA regulations.

Meanwhile, mission-critical components: landing gear cylinders, downhole tools, and hydraulic actuators depend on high-performance internal coatings. This isn't a niche problem. It's a global blind spot.

Mini-HVOF torch over a cylinder

The technology

Purpose-Built Technology for the Surfaces Others Can't Reach

Spraywerx engineered the ID-Nova™ platform specifically to solve the internal diameter challenge, not as a workaround, but as a production-grade solution.

2.5"

Coats Bores as Small as 2.5"

Mini-Nova™ and ID-Nova MK-7 torches access internal diameters that legacy systems simply cannot reach. No compromises. No workarounds.

NRC Canada Validated
4–5×

4–5× Taber Wear Index (TWI) abrasion vs. Hard Chrome

WC-CoCr coatings deliver 500+ hours of corrosion resistance in salt spray testing – compared to 50 hours for chrome. Hardness exceeds 1000 HV300.

Field-Proven
ESG

REACH-Compliant. ESG-Ready.

Hexavalent chromium is being phased out globally. Spraywerx coatings are the validated, compliant alternative — already deployed in aerospace, energy, and industrial applications.

REACH Compliant

Partners

Trusted by Industry Leaders

Pratt & Whitney
National Research Council Canada
GTV Germany
Extreme Coatings
Arzell Inc.

Applications

Applications Across High-Demand Industries

From landing gear bores to downhole tools, Spraywerx technology protects mission-critical components in the world's most demanding environments.

Mini-Nova HVOF torch

Landing Gear. Actuators. Combustion Liners.

Qualified HVOF coatings for aerospace MRO and OEM applications. Pratt & Whitney TEAME partner.

Explore Aerospace Applications →
ID-Nova controller

Downhole Tools. Pump Housings. Hydraulic Sleeves.

4–5× TWI abrasion vs. chrome in abrasive, high-pressure environments. Field-proven in oil sands and offshore.

Explore Energy Applications →
Pulsar ID-Nova rotation system

Hydraulic Cylinders. Precision Components. High-Mix Production.

From coating service shops to OEM production lines. Complete turnkey systems available.

Explore Industrial Applications →
Spraywerx HVOF cell

Prototyping

Prove It On Your Parts

Don't take our word for it. Bring your parts to our North Vancouver prototyping facility and see the results firsthand. We run paid prototyping engagements that generate real qualification data — so you can make decisions with confidence.

  • Coating trials on your actual components
  • Metallurgical laboratory: we test and characterize from raw materials to finished coatings
  • On-site testing and analysis: powder particle size distribution; coating hardness, microstructure, and porosity.

Results

Results That Speak for Themselves

Extreme Coatings — St. Petersburg, FL

“Spraywerx's technology has fundamentally transformed our coating capabilities. Where we were once constrained to larger diameters, we can now apply high-performance HVOF coatings with precision to small inside diameters as small as 2.5 inches. This breakthrough has enabled us to deliver advanced solutions across industries with demanding wear and corrosion requirements.”— Curt Kadau, President, Extreme Coatings
12" to 2.5"Expanded ID capability
>65% DENRC and Spraywerx validated, data on request
4–5×TWI abrasion vs. chrome

Read the Full Case Study →