High-strength HCl formula
Shorter dwell times vs. sulfuric acid for severe contamination
Surface Prep · Process-engineered chemistry
UNISOLVE H3De-Rust Chemical (Heavy Duty)
Rapid Heavy Rust and Mill Scale Removal
High StrengthHCl BasedInhibitedMill Scale Removal
01 / Product brief
Rapid Heavy Rust and Mill Scale Removal
Inhibited hydrochloric acid-based de-rusting and descaling compound for rapid removal of heavy rust, mill scale, and weld spatter from ferrous metal. Inhibitor package prevents over-pickling and base metal attack. Higher acid concentration handles severe contamination at shorter dwell times than sulfuric-based systems.
High-concentration HCl formulation handles severe rust and mill scale at shorter dwell times versus sulfuric acid systems. The inhibitor package prevents the over-pickling that causes pitting and dimensional loss on precision components.
02 / Performance
Key process advantages
Product-specific outcomes for production quality, operating control and line performance.
Inhibitor prevents over-pickling
Avoids pitting and dimensional loss on precision components
Removes weld spatter
Eliminates heat scale and spatter from fabricated structures
04 / Process position
Where it works in the line
Applied at Stage 2 (De-rust) — rapid heavy rust, mill scale, and weld spatter removal before phosphating using inhibited HCl.
- 01
Degrease
Process stage
- 02
Rinse
Process stage
- 03
De-rust
Applied at Stage 2 (De-rust) — rapid heavy rust, mill scale, and weld spatter removal before phosphating using inhibited HCl.
- 04
Rinse
Process stage
- 05
Condition
Process stage
- 06
Phosphate
Process stage
- 07
Passivate
Process stage
- 08
Rinse
Process stage
- 09
Dry
Process stage
05 / Applications
Specified for real production demands
Typical applications and substrate conditions for UNISOLVE H3.
Heavy rust removal from fabricated structural steel before phosphating
- Structural Steel
Mill scale removal from hot-rolled sections and plates
- Hot-Rolled Sections
Weld spatter and heat scale removal from fabrications
- Weldments
Rust removal on maintenance and repair applications
- Mill Scale
Technical support
Validate UNISOLVE H3 on your line.
Share your substrate, current bath, throughput and finishing system. Our process team will recommend a practical trial window.