õõneskehade (torude) tõmbamine tingimustes, kus õõneskeha sisepind ei kontakteeru tööriistadega (vrd kinnistorntõmbamine, ujutorntõmbamine, liikuvtorntõmbamine)
drawing tubing through a die without the use of an interior tool (such as mandrel or plug) to control diameter (see: fixed-plug drawing, floating-plug drawing, moving mandrel drawing)
Good to know
Sinking generally produces a tube of increased wall thickness and length.
