HG/T 20592  法兰盖 BL 65-160 RF h2=4

bl65-160 rf h2=4

WN400-150 RF Sch10pa

WN65(B)-100 RF S=7

PJ/RJ 100(B)-10 RF

WN300B-25FM /M

WN250-600 RF Sch40

WN 100(B)-25 RF S=8

PL250(B)-16rf flangefo

bl450-10 rf d=565 k=/j&TCH S=161000/F6 rf s=5F0

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