HG/T 20592  法兰盖 BL 450-6 RF RF0 RS

BL450-6RF RF0 RS

WN 50-150 RF s=5.6

PL 50(B)-10 RF

WN 2 1/2"-300 RF Sch80

3 FM 1400-2.5 δ0=16

WN 2"-150 RF Sch80

PL 65(B)-10 RF

BL 24"-150 RF

47023 RF2200-1.0.0FF MF Scj5 MF ScS 9605.0/70-

BL50-40GRF0-4.00MSRFF.h80/0RFRFF SCH40S50 rR