GB/T 12459  偏心异径管 DN 50×32-Sch80SRE

DN 50×32-Sch80S RE

SO20-150 RF 12.850-1.6/70-165 H

wn100-900rf sch60F S/RF/f92工

WN40-600 RF S5

PL 200-10 RF1.0/50/1105 RF S=9

BI 1200-2/rfs0F S/RF/f92工fbspfs816/1.0=4s

PL350B-6RF=3-6F00-

47065.3 C2sf0S

wn50-160 m so6/)-16 RF3/u00c6

DN25-PN16 SO