NB/T 47023  法兰 FM 750-1.0.6fm120)-16.5/90-1

47023 FM 750-1.00-0.6fm120)-16.5/90-1

BL 450-1500 RF S=/u00c3/u0082/S=920

WN50-300T S=5.54T205mp

bl20-63rf/

SO 15-150 RF0��pl

WN 600(B)-40RF1303

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PL 250(B)-6 RFРЁВ°Р

WN 150-150 RF Sch40S(.05616 FFc5811=3f h1510F=26m6HMFk