1.1 ,This standard is intended to establish the minimum criteria necessary for use of a mechanically mixed, blended, epoxy barrier coating (AWWA Class I) that is applied to the interior of ¹/₂ ,in. (12.7 mm) to 36 in. (914.4 mm) metallic pipe or tube used in pressurized piping systems for corrosion protection and to improve flow rates. There is no restriction as to the developed length of the piping system other than the method of application (“,blow through”,, spin cast or hand sprayed) and the characteristics of the epoxy coating being applied but the manufacturer’,s engineer shall be consulted for any limitations associated with this product, process and its application for the end user.