HG/T 20592  法兰 IF 150-16 RF D=139205(B)-25 RF S=802

IF 150-16 RF D=139205(B)-25 RF S=802

PL100(B)-16 RF

WN 80-16 RF

LWN50-600 RF B=52 H=21pampampampampa

wn32-16mr00(RD/sch6 RF h���B RFch Ag00-16

BL20-600RF

WN 150(B)-16 RF S=4

WN 50-150 RF B=48 R1=≥5 R2=≥502 REM

WN 65-16 RF

WN40-100Rf/1=1006/