NB/T 47022  法兰 FM 650-4.0/20δ1=14=4F0000 S

2 FM 650-4.020δ1=14=4F0000 S

DN250-Sch140 TSTh40 huo59210WN5S=12(/53

B WN 800-150 RF S=6F C=/50F h=0RF250

SO 1200(B)-6 RF0-S6rf-Hpah4 RF-80 b= BT=5

awn1000-150rf10155

SW 150(B)-10 RFuotHG203=463dn

WN15(B)-16 RF S=516 RF1

WN80-600 RJc=2059=1

PL150(B)