HG/T 20592  法兰 WN 400(B)-100 RJ120b3/public

WN 500(B)-16 RF S=10

WN 40-900 RF Sch40S

SO 80-300 FM

DN40/PN40/12A/2h=u00e2 HRF20F5 RJ R1ca

so125-25fm/forum

WN 100-300 RF S=4

WN 40-25 RF

BL200-150RF00-1

B WN 42"-300 RF A

nb/47021 fm1000-0.6/56 s=10jsch4S=41=20A8027 H=169 S=4 FM Sch400C0sF