manifold dies dvb D+E makes manifold dies for automotive condensers and brazed aluminum heat exchangers. Our patented “mandrel free” process allows piercing and forming of single piece aluminum tubes and does away with two piece (clamshell type) manifolds that need to be clinched. Mandrel free process Single piece manifold Lead-in for easy insertion of micro-tube 3D at every stage - from Design to Machining In-house Tryout & Buyoff Early parts