片语
BELLOWS SEAL VALVE波纹管密封阀
Steam Bellows Globe Valve进口蒸汽波纹管截止阀
Bellows globe valve进口波纹管截止阀
Bellows reducing valve波纹管式减压阀
bellows s valve波纹管阀
bellows gaslift valve[油气]
bellows gate valve进口波纹管闸阀
bellows sealed valve风箱密封阀
Hydrogen Bellows Globe Valve进口氢气波纹管截止阀