NB/T 47022  法兰 T 650-0.25/20

2 T 650-0.2520

WN 6"-300 RF Sch10S0S800-6.4rfs0250

WN 6"-300 RF=3.4 K6=4 b=28504-1956rf.5(105RF-70-160c3/u9f

PL 80(B)-6 FF D=170 B=100 L=126 rf hg/=4 R

AXA-4(0082/=310Sch361/9

bl400(b)-6 ffS/12-1

SP-45 R

PL100(B)-16 RF=1224 Ch80

DN 125-Ⅱ-