What pipe material can the threading dies works on?

What pipe material can the threading dies works on?

We Hongli have threading dies suitable for Steel pipes, Galvanized pipes, Seamless Steel pipes, Stainless Steel pipes, Black iron pipes. 

For the hard-to-cut material, like Stainless Steel pipes, and Black Iron pipes, we strongly advise you to choose HSS threading dies.
 

Stainless Steel pipes, and Black Iron pipes