valtspink ühe või mitme kahevaltsilise valtstooliga e duo-valtstooliga (vt: valtspink; vrd trio-valtspink, kvarto-valtspink, paljuvaltspink), a type of rolling mill in which only two rolls, the working rolls, are contained in a single housing (see: rolling mill; compare: three-high mill, four-high mill, cluster mill)