SURFACE PREPARATION GUIDE
For onshore and offshore pipelines, welded joints, fittings and all civil and marine structures…
DENSO SURFACE PREPARATION GUIDE
Dry abrasive blast cleaning is not always desirable or possible due to environmental or access restrictions. For 90 years Denso has been a world
leader in providing innovative and permanent corrosion prevention solutions over hand tool cleaned steel surfaces whilst reducing applied coating
costs and meeting the most stringent health & safety requirements.
The tables below outline the recommended surface preparation methods for steel surfaces; steel, timber and concrete marine jetty piles; and Denso sealing systems for concrete and asphalt. For ease of use, the icons for these methods are displayed on our product pages. If you would like further information on surface preparation please contact us and one of our representatives will be in touch to help you with your query.
| Icons | Denso System | Surface Preparation Method for Steel | Alternative Method |
|---|---|---|---|
 Hand Tool Cleaning | All Denso Petrolatum systems | Minimal surface preparation, chipping hammers, hand wire brushing | |
 Power Tool Cleaning | All Denso Bitumen, Butyl, Viscoelastic systems & ST Epoxy | Hand or power tool to St2 / St3 (ISO 8501-1) or high pressure water jetting (ISO 8501-4) | SSPC-SP2 Hand Tool Cleaning SSPC-SP3 Power Tool Cleaning |
 Dry Abrasive Blast Cleaning | All Denso Glass-Flake Polyester, Protal Epoxies & Archco Epoxy Vinyl-esters | Dry Abrasive Blast Sa2 1⁄2 (ISO 8501-1) with an angular surface profile of 50 to 125 microns | SSPC SP-10, NACE No. 2 |
The above are indicative only. Refer to Instructions for Use and Project Specifications Note: ISO standards are not exact equivalents to NACE / SSPC.
| Icons | SeaShield System | Surface Preparation Method for Steel, Timber and Concrete Marine Jetty Piles |
|---|---|---|
 Dry Abrasive Blast Cleaning | SeaShield 70, SeaShield 80, SeaShield 90, SeaShield 100 SeaShield 400, SeaShield 500, SeaShield 2000FD | a) Remove marine growth, loose rust, paint and foreign matter by hand and / or power tools. High pressure water jetting may also be selected for use. b) Remove weld spatter on steel piles, and all sharp points and edges on all jetty piles. |
THE ABOVE IS INDICATIVE ONLY. REFER TO INSTRUCTIONS FOR USE AND PROJECT SPECIFICATIONS.
REMOVAL OF CHLORIDE AND OTHER CONTAMINANTS
We recommend the use of HoldTight® 102 on freshly cleaned surfaces to remove all traces of chloride and other contaminants and prevent flash rusting for 48 hours prior to applying our Denso glass flake polyester, Archco™ epoxy vinyl-esters, Denso ST Epoxy and Protal™ epoxy coating systems.
| Icons | Denso Sealing System | Surface Preparation Method for Concrete and Asphalt |
|---|---|---|
Hand Tool Cleaning | Densostrip and Denso Highway Maintenance Products | Minimal surface preparation, surfaces must be free of loose debris. Refer to the product application instructions for full surface preparation methods. |
THE ABOVE IS INDICATIVE ONLY. REFER TO INSTRUCTIONS FOR USE AND PROJECT SPECIFICATIONS.
