GB/T 12459  异径三通 DN 600×600×65-Sch160TR

DN 65×65×600-Sch160 TR

WN 400(A)-40 RFpampamp0=78L-2F112RF4-1300 RFRF

NB/T47021 c-M800-1.0sch306.

WN 500-300 RF B =47665

BI1000ch1

wn300(b)-16 rf s=hgcaSCH1

2 RF 700-2.5f S=4C=3010

wn80-600rf sch43

wn250(b)-1500 rjB5 FM Sch1 C=4-4.fH=23/ S=6f)40sc