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SSPC GUIDE 25

Guide for Use and Selection of Powder Coating Systems for Protective Purposes

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Organization: SSPC
Publication Date: 20 September 2019
Status: active
Page Count: 12
scope:

This guide provides general information to assist facility owners and specifiers who select or specify powder coating systems to protect steel substrates from corrosion. It includes information about surface preparation and application procedures, and also about coating system durability and performance. Detailed descriptions of substrate selection and pretreatment are beyond the scope of this guide. Coating powder suppliers can provide advice regarding selection of specific primers and finish coats, and powder application and recovery equipment suppliers can assist with the selection of specific equipment.

The powder coatings discussed in this guide are suitable for use in the following SSPC Environmental Zones described in Section 1 of SSPC Painting Manual Volume 2, Systems and Specifications and ISO 12944-2:

Note: The ISO Corrosivity Categories do not directly correspond to the SSPC Environmental Zones. Table 1 shows an approximate comparison.

TYPICAL APPLICATIONS FOR INDUSTRIAL POWDER COATINGS:

Handrail, fences, structural façade components, chemical tank linings, pipeline coatings, decorative façade components, structural steel components. Original equipment manufacturing (OEM) applications also include powder coatings but are not within the scope of this guide.

UNITS OF MEASURE:

This standard provides both IEEE/ASTM/SI 10,(1) International Standards (SI) units and U.S. Customary units. The measurements are not exact equivalents; therefore, each system must be used independently of the other without combining in any way.

This standard uses U.S. Customary units with approximate SI units shown in parentheses.

(1) ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards volume information, refer to the standard's Document Summary page on the ASTM website.

Document History

SSPC GUIDE 25
September 20, 2019
Guide for Use and Selection of Powder Coating Systems for Protective Purposes
This guide provides general information to assist facility owners and specifiers who select or specify powder coating systems to protect steel substrates from corrosion. It includes information about...

References

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