The cross product is used for grooved pipe connection, mainly in the grooved pipe end where the main pipe needs branch pipe. The diameter of the main pipe and branch pipe is the same. 

Grooved eccentric reducer is used for groove pipeline connection. It is mainly applied in the pipeline diameter change. The center of the two ends of the connection is in the same straight line, which can change the flow rate. 

Grooved concentric reducer is used for groove pipeline connection. It is mainly applied in the pipeline diameter change. The center of the two ends of the connection is in the same straight line, which can change the flow rate.

The grooved cap for tubing is used for grooved pipe connections, for blocking the pipe.