HG/T 20623B  法兰 WN 650-300 RFS0

20623 b wn650-300 rfS0

PL350-16RF D=515=3005

1 RF 350-2.5 δs=10

SO 25-300 RF0-1.0.0)

WN 200-600 RF B=179

SO100-150 RF63RJ Fp6FG5 RJ R

B WN 34"-150 RF B=10

SO50(B)-16 RFF S0 RF(B)-1

TPB-2-3.565@a w

WN 2"-150 RF=FRFR41A18915AF s40s0Ãt;-