AWWA Class E-Hub and Blind Flanges
AWWA Class D-Hub and Blind Flanges
AWWA Class E-Ring and Blind Flanges
AWWA Class B-Ring and Blind Flanges
AWWA Class F-Ring and Blind Flanges
AWWA法兰
AWWA Class B-Hub and Blind Flanges
AWWA Class D-Ring and Blind Flanges
Charts and Drawings AWWA法兰标准尺寸及重量（AWWA Class E-Ring及法兰盖）
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