método para produção de tubo de aço sem costura e instalação para produção com esse fim

In the production of a seamless steel tube by piercing-rolling a heated billet with a piercing machine to form the billet into a hollow blank, and without reheating the hollow blank, by successively subjecting the hollow blank to elongation-rolling with an elongation-rolling mill and diameter-adjust...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	YUSUKE SENDAI
Format:	Patent
Sprache:	por
Schlagworte:	MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING
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