Classification of steel pipes according to connection mode

The steel pipe can be divided into smooth pipe (pipe end without thread) and thread turning pipe (pipe end with thread) according to the connection mode of pipe end.

The threading pipe is divided into ordinary threading pipe and thickened threading pipe at the pipe end.

Thickened threading pipes can also be divided into external (with external thread), internal (with internal thread) and internal and external (with internal and external thread) threading pipes.

The threading pipe can also be divided into ordinary cylindrical or tapered thread and special thread threading pipe according to the thread type. In addition, according to the user's needs, the threading pipe is generally delivered with a pipe joint.