HG/T 20592  法兰盖 BL 125-16 RF d=210 d=/540-2.1F7Sc S=4ñ5Fbl40-150rf RF

bl125-16rf d=210 d=/540-2.1F7Sc S=4ñ5Fbl40-150rf RF

LWN25-150 RF B=27 H=208 wn

WN15(B)-160RFRFchF S=80 H=2 100A40=10

WN 65-150 RF.7C=141 M S=3.5=3.0560.6Fh S=10

PL50A-16 RF b=3b=380-25RF RJ S=550(B)-25R

WN 20(B)-25 FM S=44pampampampwd=&S=20R

wn100(b