HG/T 20592  法兰 WN 500-25 FF S=S Sch80C =38 S=12/1

WN500-25 FF S=S Sch80C =38 S=12/1

WN 65(B)-16 RF S=3.5

WN50B-10RF

WN40-300 FM Sch40S

3fm1600-1/54RFF./39-80HG/T

PL 50(B)-16 RF

PL 32(B)-25 RF

WN 65(B)-16 G S=3.5

WN 150-300 RF S=10

耳座 B15 RFSch160pamp52012=3S=3.50S.6ã RF--16rF71.09 WN80pam RF =