AWWA法兰
AWWA Class E-Hub and Blind Flanges
AWWA Class B-Hub and Blind Flanges
AWWA Class E-Ring and Blind Flanges
AWWA Class F-Ring and Blind Flanges
AWWA Class D-Ring and Blind Flanges
AWWA Class D-Hub and Blind Flanges
AWWA Class B-Ring and Blind Flanges
AWWA法兰标准尺寸及重量（AWWA Class E-Hub及法兰盖）
上一篇：AWWA Class F-Ring and Blind Flanges
下一篇：AWWA Class E-Ring and Blind Flanges
