HG/T 20592  法兰 WN 40-25 RF S=4=7=4 AA150RF=1RF Sch800 RJ Sch40S=4F Sch40S0S=185 k=150 l=145RF0SRF4.5Р�

WN 40-25 RF S=4=7=4 AA150RF=1RF Sch800 RJ Sch40S=4F Sch40S0S=185 k=150 l=145RF0SRF4.5Р�

LWN125-300 RF0/

WN 500-150 RF Sch80sN100(B)-1

WN100(B)-100 RF S=6

WN 4"-150 RF

DN 200-Sch40 45EL

PL 500(B)-10 RF

PL40A-10RF16115f

PL20(B)-16RF b=3

SO 40(B