HG/T 20592  法兰 WN 50(B)-25 RF S=5Frff16056-RF/data/src

WN50(B)-25RF S=5Frff16056-RF/data/src

so 40-150 rf sc

pl400-25 RF0RFRsch4pampa000-1.c

47021 rf900-1.0 –

PL350(B)-16 RF-16rf0

47023 RF 600-1.0/40-150

WN 250(B)-40 RF

WN15-900RJ S=3FS.0=1

TH 24"-900 STTF-111RFj sch47

bi 1400-f(s) b1.0-12 RF