HG/T 20592  法兰 PL 20(B)-16 RF b=3

PL20(b)-16 RF b=3

PL32(b)-16 RF b=4

LWN40-150 RF Sch40 H=20

BL900-25 RF

pl125a-16mF13pa

PL450(B)-6FF

wn 65-63 m s

BL 150-150 RFf74c.01-016 R3580f

WN350-1500 RF40RFMF/u00-1.

SO 50(B)-40 TS2cRFJ FM�SC0h10F5 RJ-1RFESC.3 H=431600 LMFmp25 RF S=6FMT Rch4