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GB1315962A
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Electro-chemical machining
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GB1315963A
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Electro-chemical machining
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GB899750A
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Tube or bar reducing machines
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GB893797A
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A method and means for reducing metal stock
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IE17888L
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Tube connections
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GB621481A
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Improvements relating to tube connections
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GB597213A
|
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Improved method and means for the treatment of metal tubes or bars by means of liquid
|
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GB550902A
|
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A machine for trimming the ends of cylindrical metal tubes or bars
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GB531371A
|
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Improvements relating to electrically heated cooking and like apparatus
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GB484838A
|
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Improvements relating to ball and socket pipe couplings
|
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GB174299A
|
|
Improvements in casings for voltmeters, ammeters and similar instruments
|
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GB178523A
|
|
Improvements in appliances for piercing billets of steel or other metals
|
|
GB176949A
|
|
Improvements in rolling mills
|
|
US1412261A
|
|
Rolling mill
|
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GB135707A
|
|
Improvements in or relating to Rolling Mills.
|
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GB128465A
|
|
Improvements in or relating to Machines for Manufacturing Weldless Tubes.
|
|
GB191225667A
|
|
Improvements in the Manufacture of Seamless Tubes.
|
|
GB191215873A
|
|
Improvements in the Manufacture of Seamless Pipes, Hollow Metallic Bodies and the like.
|
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CA130892A
|
|
Metal tube, rod, etc.
|
|
US989643A
|
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Manufacture of metal tubes or the like.
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