Better Paint Starts with a Cleaner Process
Steelcote™ Zirconium delivers zinc phosphate-level performance—without sludge, phosphates, or hazardous waste.
Zirconium Pretreatment
A Simpler Way to Get Better Results
Choose Your System
Custom
Cleaning
Phosphate-free cleaners tailored to your soils.
Rinse with
Tap Water
No special requirements.
Steelcote™
Conversion Coating
Nanoceramic bond, no sludge.
RO/DI Rinse
Purified rinse for a clean, coated finish.
Steelcote™ 1750
Cleaner/Coating
Cleans + coats in a one step.
Rinse
No special requirements.
Rinse
No special requirements.
Steelcote™ gives you two clean, reliable pretreatment options. Choose the 4-Stage system for maximum flexibility or the 3-Stage system to streamline your line. Both deliver the performance of zinc phosphate without the headaches.
Steelcote™ 1750 Cleaner Coater
Go Phosphate-Free in Just 3 Stages
Introducing Steelcote™ 1750 Cleaner Coater, a revolutionary zirconium solution for simplified pretreatment systems.
For operations running 3-stage washers, Steelcote™ 1750 brings phosphate-free performance without sacrificing protection. This all-in-one cleaner coater is easy to run, easy to manage, and compatible with your existing wash line.
Managed by simple titration—no additives required
Delivers better corrosion resistance than iron phosphate
100% phosphate- and heavy metal–free
Sludge-free and HAZMAT-free
Drop-in replacement for existing iron phosphate systems
Perfect for operations looking to simplify
What We Offer
Why Manufacturers Are Switching to Steelcote™
With deep expertise in conversion coatings, lubricants, and a variety of brazing processes, CPI helps automotive suppliers:
Passes toughest OEM specs
Zero phosphates—anywhere
No sludge or sealer stage
Up to 60% less water
Easy to manage bath
Steel or aluminum compatible
Proven in the Lab. Trusted in the Field.
What our customers say
Technologist
Global Welding Manufacturer
“Our transition to Steelcote™ was flawless… the service has been exceptional.”
Ian Eicher
Director of Ops & Engineering, Yinlun TDI
“Circle-Prosco consistently has the products we need—and if they don’t, they create a solution.”
More Than a Product—
A Partner in Performance
From pre-trial audits to emergency bath recovery, Circle-Prosco’s Solution Squad ensures your line stays compliant and efficient. With over 50 years in pretreatment innovation, we know how to keep manufacturing moving.
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