HG/T 20592  法兰盖 BL 50-10 FF d= k=120 c=16 l=1

bl50-10 ff d= k=120 c=16 l=1

2 RF 800-2.5 δ1=8

BL 20-1500 RJ

SO 6"-300 LFM

NB/T47065.2 A3-700-10

BL 32-2500 RF

LWN 65-150 RF B=38 H=165/B)-1RS=/)-16 RF200

PL80-25 RF

DN25-PN16 WN RF Ⅱ S=5

HP-2 л▓м�=7h40S0s Sch80R A=3-600R-=48��–Р