HG/T 20592  法兰盖 BL 300-6 RF�¸°آ 

BL 300-6 RF�¸°آ 

WN 100-150 RF Sch80S

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�