HG/T 20592  法兰 WN 300-40 M sÆ70h40 SH/fhg/

wn300-40m sÆ70h40 SH/fhg/

WN700(B)-16m5.6

SO 32(B)-40 T-16

so450-150 rf sch40/N16RF0RF1000-ch460

WN80(B)-16 RF D=200h16RF/F00 RF S=61.6F

BL300B)-10 RFd=1

SO 50(B)-16 RF.l1S=0GB/T500(b0

JWN 25×50-150 RF Sch40S B=27F S=3.73 S=216RFRF/0 Scãδ1=12/6B