AWWAC200SteelWaterPipe参考技术资料

American Water Works AssociationANSI/AWWA C200-97(Revision of ANSI/AWA C200-91)AWWA STANDARDFORSTEEL WATER PIPE-6 IN.(150 mm)AND LARGERAMERICAN NATIONALSTANDARD■Return toList of StandardsEffective date:Oct.1,1997.First edition approved by AWWA Board of Directors Jan.26,1975.This edition approved Feb.2,1997.This edition approved by American National Standards Institute July 3,1997.AMERICAN WATER WORKS ASSOCIATION6666 West Quincy Avenue,Denver,Colorado 80235Copyright (C)1998 American Water Works Association,All Rights Reserved.