The api 5l dimensions are such that they can be used to transport petroleum, oil, gas, and water at high pressures and temperatures.

ANSI B36.10 and ASME B 16.9 Dimensional Table

Seamless pipes are derived from solid steel that is in sheet or bar form and is formed into a solid round shape known as “billets” which are then heated and cast over a form such as a piercing rod to create a hollow tube or shell.A seamless tube may also be known as a seamless pipe.

API 5CT J55 Casing Tubing is a API 5CT Oil Casing Pipe & mainly used for oil well drilling

In addition to the method of construction, the pressure capacity, cost, and the application of each kind of pipe vary from the other.

Based on the NPS and schedule of a pipe, the pipe outside diameter (OD) and wall thickness can be obtained from reference tables such as those below, which are based on ASME standards B36.10M and B36.19M.