HG/T 20592  法兰 SO 350(B)-40 FF61b=3 d=130

SO350(B)-40FF61b=3 d=130

BL 450-6 RF)-0RF B=/s./u00c2

SO100-150 RF1.6 RF)-16 RF06F77F2.

PL150(A)-25RF=18C1.6/54-10

SO 25(B)-6 FFpampF1H40/300 R0 RF86-

WN80-2500 RF0-40 rf s=104125F

wn200-300 rf b

WN1000(B)-6 RF0- f SCH8ch200

Wn25(b)-160Fm s�

WN350