NB/T 47021  法兰 RF 1200-0.6 δ=60

4701 rf1200-0.6 δ=60

LWN 50-300 RF H=192

pl20-16rf(a)(b)-1680S/F/S/

WN100-300T A9R/12

wn80(b)-100mf╤Γ┬Α┬γ╨μ┬Ε╨ν┬Π╤Γ┬Α┬Φ╨μ╨Ψ╤Γ┬Α┬Υ╤Γ┬Κ╨Ε╤Γ┬Α┬�

WN100-1