The term “pipe end” refers to how the pipe is finished at its extremities.
The common
pipe end types are:
Plain ends (PE): plain ends are generally used for smaller diameters and require slip-on flanges and socket weld fittings. Plain ends are also common for stainless, duplex and nickel-alloy pipes.
Beveled ends (BE): this is the most common pipe end type (beveled end pipes are joined by welding).
Threaded ends (TE): threaded ends (which are generally NPT as per ASME B1.20.1 for petrochemical pipes) require threaded fittings and flanges and are used for smaller size pipelines or gas lines.
Threaded and coupled ends (T&C), generally used for gas distribution.
Grooved ends (example Victaulic pipes): these are pipes that allow a quick connection, used for non-critical applications.
