GB/T 12459  弯头 DN 100-4.590ES4702FRF10BB

DN 100-4.5 90ES4702FRF10BB

BL400-10RF/ch wn50(b)-16

HG/T20592PL20(B)-10RF

wn80b-100g8h54

pl65(b)-16rf/-1 M S=8

wn50(b)-40rf.3=1-10RF00RFf sch..6050h/2@RF@4RFF S200-1

PL600B-25FFI d=78 &a

1 FM 900-0.6 δs=9F@H R=D0/82RF80s0F�bl R1@0-5 RJ

BI 500 H