Rotating Unions and Rotary Joints (also known as rotary swivels, rotary couplings) are precision mechanical devices used to transfer fluid from a stationary source, such as a supply pipe, into a rotating piece of machinery. They are used in numerous manufacturing processes to cool, heat, or transfer fluid (pneumatic or hydraulic) power.

Raw material inspection (5 steps): Ensuring the raw material conforms to the order requirements.

Process testing (10 steps): Each processing step is tested to guarantee each step product is qualified.

Factory testing (6 steps): Assuring 100% product qualified rate to meet customer's requirements.