GB/T 12459  弯头 DN 50×25-390ELR0RF¦ÃELA6F

DN 50×25-3 90ELR0RF¦ÃELA6F

WN50-900 RF Sch8.0

WN100(B)-16 RF D/2=7.15F Sch10009/

BI 3500101000-1-

BL 500-6 RF16 RF

pl125(B)-10 RF B=3909 wn b=3FF SCH

wn200-300 rj sch80FB)AA.0/R-85150RF RF

WN80-150RF615

LWN100-300 Rf300fm6M-1.6RFS=4H3F121900-1.6=8