1、ANSI/AWWA C222a-09 Addendum to ANSI/AWWA C222-08 Standard forPolyurethane Coatings for the Interior and Exterior of Steel Water Pipe and FittingsApproved by AWWA Board of Directors June 14, 2009.Approved by American National Standards Institute Sept. 17, 2009.Table 1 Properties of laboratory applied
2、 coating, add the following:1. Property Requirement Test MethodAdhesion to Steel (ASTM D4541) 1,500 psi (10,350 kPa), Minimum Sec. 4.2.9Sec. 4.2, add the following new section:2. 4.2.9 Adhesion. The adhesion of the coating system to the steel shall be determined in accordance with ASTM D4541. The adhesion of the coating system shall be a minimum of 1,500 psi (10,350 kPa).Copyright 2009 American Water Works Association. All Rights Reserved.
