HG/T 20592  法兰 WN 250-63 M00000 b=t20

WN 250-63 M00000 b=t20

WN 20-300 RF Sch40S=80 RF6 rftie2.5 SCH S=F BB=131 d=18700e2c/55 RF220

3 C4SO-1.05sFF B=59)-630-150 RF Sch80SB)-16 RF S=6RF IIRF Sch160δ1=10/data

3 C4SO-1.05sFF B=59)-630-150 RF Sch80SB)-16 RF S=6RF II

WN 22"-600 LT Sch14