GB/T 12459  同心异径管 DN 150×100-3.4RC��F0c3/u00af/f/-10RF

DN 150×100-3.4 RC��F0c3/u00af/f/-10RF

3 RF 600-1.6 δ0=12

PJ/SE 250(B)-6 FF S=6

WN25-100RF S=6/

PL 40(B)-40 FM

2 RF 1400-0.25003.html106 rf hg=

SO 40(B)-40 FM

WN 150(B)-16 FM S=6

wn 25(b)-16 rf s=2M Sch40F04Ш0fF671@°F5@ s=3

WN 150(B)-16 RF S=