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US2243382A
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Push bench apparatus
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GB530391A
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Improvements relating to push bench drawing apparatus for the manufacture of metal tubes
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ES146872A1
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A method for producing hollow bodies in the shape of a cup from metal ingots.
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ES146415A1
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A process for the manufacture of hollow metal bodies of thick walls as a cup by drilling a block inserted in a matrix.
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ES146152A1
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A process for the manufacture of tubes in the bank of impulsion by means of cylinder steps.
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DE720572C
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Process for the production of cup-shaped hollow bodies from a metal block
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DE712459C
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Piercing mandrel with attached washer or cap
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DE721927C
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Bump bench for stretching pre-punched, cup-shaped blanks in one stroke to at least ten times the length
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DE648918C
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Process for the production of seamless tubes
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CA443573A
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Push bench drawing apparatus for the manufacture of metal tubes
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