WN80(B)-16 RF d=

PL300(B)-10 RF D=328 B=32

lwn15-300rf1

BL450-6 RF d=5203.

WN350-600 RF B=318

DN 80-Ⅱ-4 TS

法兰WN400(B)-16RF

nb/t47021rf300-1.00 fmF S=401ceRvF0rf0-G

WN 20-63 m

Bl200b-16ffmpampa80

wn 350-600 RF

pl400a)-6rf hg/t21633-19916RF Sch4