Special Die Set for Threading is a carbide-tipped threading die specially developed for threading Ductile Iron Pipes, where the hardness spots in the pipe material can cause conventional alloy or HSS dies to wear prematurely. Designed to withstand these demanding conditions, the carbide-tipped dies provide more durable and reliable threading performance, with a service life of more than 10 times that of conventional alloy or HSS dies. This makes the special die set an ideal choice for plumbing, sprinkler, pipe installation, and other applications requiring efficient and long-lasting Ductile Iron Pipe threading.