HG/T 20592  法兰盖 BL 600-10 TWN25-15 s=�´1=10 rf s=6159

BL600-10TWN25-15 s=�´1=10 rf s=6159

BL 250-25 RF92)6/42-F1800-S0pq

WN500-150 RF Sch40=180-16rf S=88 s=3.5

PL 500-10rf40c3/u/5RFb)-10r rfSeD=145 BB=46 S=M-1500 RJ259)-630-150 RF Sch80SB)

3 C4SO-1.05sFF B=59)-630-150 RF Sch80SB)-16 RF S=6RF IIRF S