GB/T 12459  弯头 DN 300-Ⅱ-690ES RF=u00

DN 300-Ⅱ-6 90ES RF=u00

WN40-100 RF s=8.5=

WN32(B)-16 RF S=3

LWN300-25 RF

PL200(B)-2.5RF

WN600(B)-40 FM5.6ES108ampampampap

bl400-300 m

PL300(B)-16FM-4mp5(180

PL 250-16RFc=44@ pl65(h-30800 RF-4.0

wn80(b)-100rf s=65RFh80 B=24.3671@°F5@P RFR0schXXS402