Class150(法兰参数表)

Class150(PN20) HG/T20615-2009公称尺寸钢管外径突台外径外径螺栓圆孔数孔径法兰厚度内径颈大端法兰高法兰重盖厚度盖重DNNPSAdDKnLCBNHSOCBL150.521.3