1.copper valve 2.Air-conditioning valve 3.Three-way valve 4.Plumbing valve 5.half mold The machine tool can heat the ... used for upsetting the irregular parts like round,hexagonal,barrel type,and valve parts etc. With the technology, the requirements for material ... high: the whole copper rod (ø15-ø30) into blanks out3)Safety: a good working environment, fully automated production, safe, reliable, ...