GB/T 12459  偏心异径管 DN 1200×10-Sch40SRE

DN 1200×10-Sch40S RE

WN150A-63RF

WN 15-300 M

PL500(B)-6 RF

BL 80-16 RF

DN100/PN10/02&32A

PL100B-16RF b=3

WN 40(B)-600 RF S=8

PL20-16RF S Rng.html5 FF S1.610-2.5 S=

A BL 48"-150 RF0 RF S=22RF RF S=8 WN RJ-15vo8579s=18rf1/8=1-25040 n=20) -1000F