GB/T 12459  弯头 DN 350-Ⅱ-290EL=00-2.5/50-

DN 350-Ⅱ-2 90EL=00-2.5/50-

SO40-150RFamp0c6/u0FM0 fmpam3

WN500(B)-25 RFa=89rj C=38-150RecH1=8 /u00e

PL65(B)-10RF16500

PL25(B)-16 RF600 RF B=25CH40 H=280rs

BL25-600 RF09WN2

47023 FM1800-1.6 δ1=N200-63RF ,H2.2

WN125-25RF A0s0LS=43045r=209.5 k=16

PL5