The rotary joint for steam is also called a high temperature rotary joint. Commonly known as plum-type rotary joints. It is a typical Q-type rotary joint.

H-type rotary joint, also known as cooling water rotary joint, is a series of products specially designed for cooling. It has the characteristics of small size, light weight and small friction torque.The H-type rotary joint is divided into a HD type one-way flow type rotary joint and an HS type two-