Manufacturing process

Hot Piercing is used for manufacturing hot finished tubes and pipes.

Cold rolling is a widely  used step for the production of seamless, cold-finished, high alloyed stainless steel and nickel based alloy tubes and pipes, with a process able to reach lower outside diameters and tighter tolerances than the hot pierced hollows.

Cold drawing is used to obtain tight tolerance ranges , for outside  diameters but also for wall thicknesses.

Annealing.  is to release the stress after cold process.