GB/T 12459  等径三通 DN 50-Ⅱ-4TSa)-10rf07022 rf1000

DN 50-Ⅱ-4 TSa)-10rf07022 rf1000

DN100-PN6 SO RF I

WN 500-25 RF S=20-16 rfF

wn80(b)-300rfFR/rf3F16.RFWNRf 1

PL500-10RF2c=15 RC12S100-1.0mpam160FRF

WN350-10 MF Scch40 FFcF

WN500-300 RF s/amp

wn25B-16RF-12-40RF B=

PL 50(B)-10 RF-0-1)-16 F/940

WN40-6