HG/T 20592  法兰 PL 25(B)-25 T´F1JsRh40S@4RJ RFSCH40S rf@4

pl25b-25t´F1JsRh40S@4RJ RFSCH40S rf@4

WN 100(B)-40 M S=5

DN40/PN16/11B Sch10 S=2.77

LWN 20-300 RF

WN 25-150 RF Sch80S

SO 32-300 RF

SO165B-16RF0-30

B WN 30"-150 RF B=Sch40S

WN 200(B)-16 RF

WN 25-150RF Sch80s RF�RF Sch=1@RF@4 Rch44060fc00 RF Sc