HG/T 20592  法兰 SO 500-16 RFmpampampamp

SO500A-16RFmpampampamp

WN 8"-150 RF S=19

SO 15(B)-16 T60.

wn32-16rf5 RF/

DN 80×80×40-5.5 TR

PL150(B)-16 RF

WN3"-300 RF S6/05

WN 24"-150 RF S=30

BL200-600m50)/

WN 1 1/2"-2500 RJ Sch40&ampamp2120 RF Sch80SF.5 RJ40ï؟½ï�LGM