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GB1532730A
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Electrically insulating insert for pipe lines
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DE2348132A1
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Connection between metal pipes - avoids electrical corrosion by having isolating sleeve covered by supporting and protecting muff
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DE2210612A1
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ELECTRICALLY INSULATING PIPE CONNECTION
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DE1964903A1
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Segment insulating ring for insulating pipe couplings and connections of large nominal widths
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GB1180723A
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Improvements in or relating to Pipe Joints
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US3432186A
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Electrically insulating coupling for pipes and the like
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DE1214488B
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Lockable extension piece with electrical separation point for pipes
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DE1102504B
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Bendable tube stretcher
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DE1146317B
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Flange connection for pressure pipelines of large diameter, especially in water power plants
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