It has thread on it to make it possible to fix it in the drilling head. And sometimes, in order to reduce the cost, it is possible to just make a straight nozzle liner and attach a steel jacket with thread.
Suzhou Rigel Metal Co.,Ltd | Tungsten Carbide Products & Metallic Hard Metal Powders
A international supplier for tungsten carbide material and products. Headquartered in Suzhou with a factory in Sichuan, we are able to export our products all over the world as well as lower our production ...