SLEEVE PRODUCTION METHOD
FIELD: processes for making seamless tubes, namely with use of screw rolling equipment. ^ SUBSTANCE: method comprises steps of reducing heated blank in three-roll pass formed by rolls turned by feed angle and having reduction portion; piercing blank in pass formed by mandrel, guiding tool and two ro...
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Main Authors | , , , , , , , , , , |
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Format | Patent |
Language | English Russian |
Published |
10.02.2005
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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