HG/T 20592  法兰 PL 250-10 RF=Sch40S6rj hg/t2316tl

PL250-10 RF=Sch40S6rj hg/t2316tl

PL250(B)-10 RF b=4

WN400-150 RF

wn50-600 fm sch800RJRF)-12

SO 50(B)-16 RF

PL300(B)-25 RF b=3 RF sch40b)-

WN 20-1500 MfScSch40 s50RFaS= 90 RF/00rrf00-63m.65.8l=ch6

SOH FF 10K 900A b=3me0-90

wn25a-63fm s50 RFF S=5 rf(.6