弯头 DN 50-Sch4090EL-1.

DN50-Sch40 90EL-1.

wn250-16rf S=60rf s=16 h

BL 20-600RF102.5f)R

wn 40-300 RF4 f1=2

PL100-40M0/70/34c2

&ampampampamp;ampampampampamp;quot;hg20615 wn450-600rj"

BI 219 h=25rf=ch40S

PL500(B)-16 RF

T47023-M800-2.5 hg t20-16 RF S

wn250-300rf

PL600(B