Learn about ASTM A53 Grade A & Garde B Pipe Types and Dimensions

ASTM A53 is one of the most widely used material standards for Steel pipes that are used in the Oil and Gas and other process industries. Grade B of ASTM A 53 is more popular than other grades. These pipes can be bare pipes without any coating, or they may be Hot-Dipped or Zinc-Coated and manufactured by Welding or by a Seamless manufacturing process.
In Oil and Gas, A53 grade pipes are used in structural and non-critical applications. They are not used in hydrocarbon services or any high pressure and temperature services.
Pipe Size and Types Covered in ASTM A53
Pipe sizes NPS 1/8” to NPS 26” are covered in this standard. This is equivalent to DN 6 to DN 650.
There are three types of pipes covered in this standard.
Type F – Furnace-butt welded continuous Welded Pipe.
Grade A
Type F Garde A type pipe is made by continuous coil, and the longitudinal joint is welded by forge welding. In this process, sets of rollers are used that create mechanical pressure to join the heated ends of the coil.

Type E – Electric Resistance Welded Pipe.
Grade A
Grade B
Garde A and Garde B pipes of Type E are made by continuous coil, and the longitudinal joint is welded by heat produced due to electric resistance between opposite ends of the pipe. In this process also, a set of rollers are used to join heated ends. The weld seam of Grade Bpipes is heat-treated after welding to a minimum of 540°C.
Type S – Seamless Pipe
Grade A
Grade B
Type S types of pipes are manufactured using the extrusion method.
Raw steel used to manufacture pipes is produced by open-hearth, electric furnace, or basic-oxygen method.

Product Details

Hot rolling is a mill process which involves rolling the steel at a high temperature (typically at a temperature over 1700° F), which is above the steel’s recrystallization temperature. When steel is above the recrystallization temperature, it can be shaped and formed easily, and the steel can be made in much larger sizes. Hot rolled steel is typically cheaper than cold rolled steel due to the fact that it is often manufactured without any delays in the process, and therefore the reheating of the steel is not required (as it is with cold rolled). When the steel cools off it will shrink slightly thus giving less control on the size and shape of the finished product when compared to cold rolled.

Product Parameters