scope:

General

This standard covers hot- and cold-applied wax and component wrappers and wax-tape coating systems for the protection of underground metallic pipe, fittings, and valves. It outlines material requirements for hot-applied waxes, cold-applied waxes, component wrappers, and wax tapes as well as proper methods of surface preparation, coating application, and handling of the coated pipe.

Tables 1 through 4 provide material requirements and give references to ASTM⁽¹⁾ standard test methods for the various coating materials discussed.

Any reference made to wax tape and wax 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-tape coatings are applied only by hand. These coatings may be used on new piping or for coating rehabilitation.

The surface preparation required for hot-applied wax coatings differs from the surface preparation required for cold-applied wax and wax-tape coatings.

⁽¹⁾ ASTM International, 100 Barr Harbor Dr., West Conshohocken, PA 19428.