HG/T 20592  法兰盖 BL 600-6 RFF RF S=610 RF RFl300)-63

20592BL600-6rfF RF S=610 RF RFl300)-63

wn25-300fm sch40 H1fRFc¦ 2600f/1

bl50-150 RF RF)-19WN250-1)-2.5SCH400f/ch/0rfFM�¼§6

LWN80-150RF S=10S58 H5ch2M δ=60-

PL500(B)-10 RF f/in00-1.RF S=4.55=280RF.-4.0.

B WN800-300 RF A=813SCH BL7/40S80(3/u2A