<p>The set comprises cylinders each having two inlet cones for the prodn. of seamless tubes. The billet is gripped and rapidly pierced via the enlarged first and the relatively smaller second cone. The cones are linked by rounded transitions.</p>
申请公布号
RO102271(A2)
申请公布日期
1991.12.02
申请号
RO19880137221
申请日期
1988.12.29
申请人
INTREPRINDEREA DE TEVI, ZALAU, JUDETUL SALAJ, RO
发明人
TERHES GHEORGHE, RO;SABAU EMIL NICOLAE, RO;SZEREDAI DANIEL, RO
