HG/T 20592  法兰 PL 200-10 FF6rfh4F144

pl200(a)-10ff6rfh4F144

WN 2 1/2"-300 RF Sch40

WN 50-300 RF Sch40S

WN 300-300 RF80B)-10-6

WN80(B)-16 RF

PL 125(B)-16 RFS=1f sc

WN 25-150 RF Sch40S

wn300b-16 fm s=4

WN 250-300 RF S=3.5

WN 2"-300 RF Sch40Sh10040‚ 500-s40=7-1500 RJ Sch60s=1.5