What is ASTM A53?


ASTM A53 is a carbon steel alloy, used for structural steel pipe. The alloy specifications are set by ASTM International, in specification ASTM A53/A53M[1]. A53 pipe is suitable for structural or pressure applications.

A53 pipe comes in three types and two grades, A53 Type F, which is longitudinally furnace butt welded or continuous welded (Grade A only), A53 Type E, which is longitudinally electric resistance welded (Grades A and B), and A53 Type S, which is seamless pipe, produced by hot working, and possibly cold finishing, the steel (Grades A and B).

This is a standard set by the standards organization ASTM International, a voluntary standards development organizations that sets technical standards for materials, products, systems, and services.

As with other steels, A53 has a specific gravity of approximately 7.85, and therefore a density of approximately 7850 kg/m3.

A53 pipe comes in two grades, A and B. Grade A is not commonly used for structural applications.

A53 Grade A has a minimum tensile yield strength of 205 MPa (30 ksi), and minimum tensile ultimate strength of 330 MPa (48 ksi). A53 Grade B has a minimum tensile yield strength of 240 MPa (35 ksi), and minimum tensile ultimate strength of 415 MPa (60 ksi).

What size and thickness we can do?

 ERW Steel Pipe

 SSAW Steel Pipe

Outside Diameter :

 21.3 mm (1/2”) – 457.2 mm (18”)      219.1 mm (8”) – 3048 mm (120")    

Wall Thickness :

 1.65 - 14.27mm (S235)  4 - 30 mm (S235), 4 - 26mm (X80)

Maximum Length :

 12 M  20 M

Material :

 S235, S275, S355.
 GrA, GrB, X42, X46, X52, K55, J55  
 or equivalent material 
 S235, S275, S355,
 GrA, GrB, X42-X80
 or equivalent material

Which countries does your steel pipe products exporte to?

Product quality is of utmost importance at Zhongshun, so we follow a strict quality assurance system. We have received the ISO 9001-2008 International Quality Management System Certificate, API 5L Certificate, the API 5CT Certificate issued by the American Petroleum Institute, and the CE Certificate issued by EU. We have also achieved the GB/T 9711.2 certificate. High quality and competitive prices have made our products popular in over 30 countries and regions, including the U.S., Australia, Russia, Brazil, Iran, The United Arab Emirates, India, Malaysia, Thailand, South Korea and Singapore.

What is our competitiveness of SSAW production?

Our company has φ3048mm spiral submerged arc welded machine. And product range is outer diameter 8in-120in and wall-thickness 4mm-30mm.
Lengths available are almost endless but because of inspection reason, we do have some limitations, max length is 20 M long. Grades available are ASTM, API, EN and AWWA specifications.
All types of paints and coatings are available for spiral pipe. Fusion Bond Epoxy, Coal Tar Epoxy and many other protective paints and coatings.