1. Scope and Field of Application

1.1

This Standard deals with the external coating of ductile iron pipe at the factory by zinc-coating.

1.2

This Standard includes specifications for the zinc-coating, application requirements, and coating inspection. Also included are requirements for the finishing layer applied to the zinc- coated surface.

1.3

Pipe to be coated shall comply with one of the following:

ANSI/AWWA C151/A21.51, 1986 Ductile-iron pipe, centrifugally cast in metal molds or sand- lined molds for water or other liquids.

ISO 2531, 1986 Ductile iron pipes, fittings and accessories for pressure pipe-lines.