HG/T 20592  法兰 IF 20-16 RF S0=15a001l=1

IF 20-16 RF S0=15a001l=1

BL 100-16 RFh40.542

BL400-150 RF C=10 b=31.0/80-

WN 15(B)-40 FM=35f

SO 125(B)-300 RFRF.69

wn600-150rfs=23Sch40RF150-56.h

SO 150-300 RF200.6=4RF900-116 r�.6/54 1SRJ10

WN40-16 RF S=69=679F150)-1f

so150-16rf�m5311F16