HG/T 20623  法兰 WN 700-300 RF B=675

WN 700-300 RF B=675

1 FM 400-1.0 δs=6

WN 40(B)-10 RF S=3

WN50-300 fm Sch40��.0/6

2 FF 1000-1.0 δ1=10

WN800-150 RF Sch40 B

3 FM 700-2.5 δ0=10

WN50-150RFJG=200-15066 b=6R RF S=2RF12F0mpampampampa1aر†ر‘ذµ18mm0-1B) RFchf

BL 500-150 RFط S