ASTMA179/ASME SA179 standard is applicable for steel pipes together with outside diameter of 1/8in-3in. (32 mm to 76.2 mm).

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.