GB/T 12459  弯头 DN 150-Ⅱ-490ES7/80/FM 1701

DN150-Ⅱ-4 90ES7/80/FM 1701

WN80(B）-16 RF S=4.5 HG/@WN100(B)-16 RF

BL400-2.5 RF HG/T21

pl350-2.5rf BB=3

wn40-300fm s=4/4/j30408 4P

WN125-100FM=198f)-25�р²п

3 FM 800-4.0

pl15b-6RF 1-10rfch50/F

PL 40-25RF0 R

WN 250-600 RF Sch100-16RF LFM Sc2u