HG/T 20592  法兰盖 BL 40-10 FFF S=4010b4= S=/ h1=11F Sh4011-FF RF S-

BL40(A)-10 FFF S=4010b4= S=/ h1=11F Sh4011-FF RF S-

Wn 50(a)-16 RF=4F|0RF100r)B=

Wn125-300 RF Sch40200-S40Sc6lFF BB=205Fs0ELR FM-

1 RF 600-1.

wn600-150 rf b=57505XXF73Sch=10sRF2550F60/

WN50(B)-10RF.6žâ´=70 h=1650 S=80 R

BL 300-16 RFh0RJh40 s=10=-