As a type of fittings, pipe cross is usually installed at the intersection point of four pipelines. Common cross can be divided into straight type and reducing type. Most crosses on current market are made through welding two tees together and rubbing off the welding joint.
As one type of industrial fittings, reducing pipe is mainly used for connection between two pipelines with different diameters. Generally, pipe reducers can be divided into concentric reducer and eccentric reducer.
Pipe cap is usually welded onto the end of a pipeline or screwed into the external thread on a pipe end to block up the pipe. Generally, it serves as a protection device for pipe ends.