Field-Applied Underground Wax Coating Systems for Underground Metallic Pipes: Application, Performance, and Quality Control
|Publication Date:||24 April 2018|
This standard covers hot- and cold-applied wax and component wrappers and wax-based tape coating systems for the protection of underground metallic pipe. It outlines material requirements for hot- and cold-applied wax coatings, and handling of the coated components.
Tables 1 through 5 provide material requirements and reference ASTM(1) standard test methods for the various coating materials discussed.
Any reference made to wax-based tape coating and wax-based primer in this standard also applies to petrolatum tape and petrolatum primer.
Hot-applied wax coatings may be applied by machine as a line-travel operation in the field or by hand. Cold-applied wax and wax-based tape coatings are applied only by hand. These coatings may be used for new construction, damaged coating rehabilitation, as well as coating replacement.
The surface preparation required for hot-applied wax coatings differs from the surface preparation required for cold-applied wax and wax-based tape coatings.