HG/T 20592  法兰盖 BL 300-100 Gch80Soty0150 RFF�Fj@5c2@RF@443RF@0-11RF0s RF s=6ht2=18F@A 1 FRFF

BL300-100Gch80Soty0150 RFF�Fj@5c2@RF@443RF@0-11RF0s RF s=6ht2=18F@A 1 FRFF

SO 200-10 RF=5rf bl125

WN3"-150 RF B=72.9

PL100(B)-16 RF

WN 20"-300 RJ Sch80S

SW 1"-150 RF

PL15(B)-16 RF

PL400(B)-6 RF6PL20(B)-16 RF50RF-rf@40@S5 RJr

SO 6&quo