HG/T 20592  法兰盖 BL 200-25 RF= D= t= h= q=0.6

BL 200-25 RF= D= t= h= q=0.6

BL 32-100 M60rH80S/70-4

bl15(b)-100 rff s-16 rf s90 K=1200 N0-200(B

GB/T29465 M800-4.00F0309bl/150rM Sch40sH8�

47023-fm 1000-4.0SSFRFh4 rjEG49ampa

SO 80(B)-16 RF0-6 S80S m s=3)10L RF Ⅱ45 f3=

SO100(B)-40T)-300RFF1600s4