GB/T 29465  法兰 FM 0-1,21 f1=30/70F S＝60/h0fmf50--2.58

DN15-PN16 PL RF ⅡRF0 п5 T5 FM0-1,21 f1=30/70F S＝60/h0fmf50--2.58

3 FM 400-4.0 δ0=10

PL 150B-25 RF5MF=3JR/2.530=1-63wn200-0

SO450-25RF/103-300561

WN 200(B)-16 FF S=8

LWN50-300RF B=52,H=179f s=3.116 f912b3/u00970 K=105

47023 ff500-10-112da

WN900-