ASTM A53 Grade A, B Seamless and Welded Steel Pipes Manufacturers

Metallica offers high quality of  ASME SA53, ASTM A53 Grade A, B seamless and welded black and hot-dipped, zinc-coated steel pipes to customers across the globe and in India. In addition to supplying ASTM A53 steel tubes, Metallica also offers fabrication services that include cutting, bending, shearing, saw cutting and welding for all of kinds of seamless steel pipes and tubes. Our primary objective is to ensure that our customers receive A53 Grade A, Grade B pipes at competitive prices, together with excellent service.

Features of ASTM A53 Grade A, B Seamless and Welded Steel Pipes

• ASTM A53 specification covers both seamless and welded steel pipes.
• Iron is main element in the A53 pipe.
• ASTM A53 is one of the widely used standard specification for steel pipe that is used in the Oil and Gas as well as other process industries also.
• In Oil and Gas ASTM A53 pipes are used in the structural and non-critical application. They are not used in hydrocarbon services or any services that involve pressure and temperature.
• ASTM A53 Grade B is more popular than other grades.  These pipes can be bare pipes without any coating, or it may be Hot-Dipped or Zinc-Coated and manufactured by Welding or by a Seamless manufacturing process.
• Flattening Test – One flattening test shall be made on specimens from each end of one finished tube, not the one used for the flaring test, from each lot.
• Flaring Test – One flaring test shall be made on specimens from each end of one finished tube, not the one used for the flattening test, from each lot.
• Hydrostatic or Nondestructive Electric Test – Hydrostatic inspection test pressures for plain end and threaded and coupled pipe are specified. Hydrostatic pressure shall be maintained for not less than 5 seconds for all sizes of seamless and electric-resistance-weld pipe. Nondestructive electric test shall be made to make sure that the full volume of the pipe must be in accordance with the standard. The type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.
• Bending Test – For pipe size NPS 2 and smaller bending test is performed to check the ductility of the pipe. Bend test can be 90 Degree of 180 Degree depending on the requirement.
• Tensile Test – This test is performed to check the mechanical properties of the pipe. For welded pipe, the strength of the weld should not be less than the strength of the pipe body.
• Chemical Analysis of the final product. Number of test – 2 Pipe per lot of 500 or 2 Pipe per heat Number. If either pipe fails- two more pipes shall be tested from the same lot

There are three types of pipes covered in ASTM A53.

•  Type F – Furnace-butt welded continuous welded Pipe.
  • Grade A

This type of pipe is made by continues coil, and the longitudinal joint is welded by forge welding. In which set of rollers is used that create mechanical pressure to joined heated ends.

• Type E – Electric-resistance welded.
  • Grade A
  • Grade B

This type of pipe is made by continues coil, and the longitudinal joint is welded heat produced by electric resistance between opposite ends of the pipe. In this process also, set of rollers are used to join heated ends. The weld seam of Grade B pipes is heat treated after welding to a minimum of 540°C.

• Type S – Seamless
  • Grade A
  • Grade B

These types of pipes are manufactured using the extrusion method. Raw steel that used to manufacture pipes is produced by open-hearth, electric-furnace, or basic-oxygen method.

Production Range for ASTM A53 Grade A, B Seamless and Welded Pipes

Chemical Composition of ASTM A53 Grade A, B Steel Pipes