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EP0750951B1
(en)
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Method and apparatus for manufacturing hollow steel bars
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US4416134A
(en)
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Process for manufacturing seamless metal tubes
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US3132545A
(en)
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Cycloidal rolling mill
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US3495429A
(en)
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Method of reducing tubes,especially thick-walled tubes and means for practicing the method
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FR1576091A
(cs)
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CN106552820A
(zh)
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六角形中空钢的制备方法
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AR212737A1
(es)
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Bastidor inclinado de laminacion
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US4510787A
(en)
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Method of manufacturing hollow rods
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US2063689A
(en)
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Manufacture of tubes
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US374703A
(en)
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Bolls foe reducing and tapering tubes and eods |
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US1957916A
(en)
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Apparatus for and method of producing metal tubes
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IT1130049B
(it)
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Laminatoio obliquo con cilindri rotanti con dispositivo di azionamento a satelliti
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JPS55114407A
(en)
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Production of steel bar having hollow part of sectional area ratio 0.3 or less and producing device
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DD87291A
(cs)
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