HG/T 20592  法兰盖 BL 600-6 FF500RJ16RFpnbsp10F0F R

CBL600-6FF500RJ16RFpnbsp10F0F R

WN 50(B)-63 FM00 rf1543/ch4000

DN 65×10-Ⅱ-5 REaa=150rf60 C0.2�77.5 RJ-1603

wn80(b)-160 rf s=8

DPL250(B)-10 RF0 ScRFatch840

WN50(B)-63 RF S=3.5

47023 M400-2.522 s50-100.500

WN25A)-63RF4

2 M 1200-1.0 RF P-4S-150 rf6