HG/T 20592  法兰 IF 700-16 FF

IF 700-16 FF

DN25-PN250 WN M Ⅱ Sch40S

BL600-10 RF

wn80 -300 rf=4G6/

WN25-300 RF Sch40

DN450×300-Sch10S RC δ=5

WN50(B)-2500 RF

WN 20-25 RF

SO300-150 RF

SO 32(B)-40 RFRF@407.5 RJ RFF�0 RF40Sfi0H160r*S=12 RF Sch10S-150 RFҝҪ000Sh80SMF ScF&amp