ASTM A53 Tubing

A53 Type E Grade A & B

Valmont Tubing produces round electric resistance welded (ERW) steel tubing to meet ASTM specifications A53 Type E Grade A and Grade B that is often used for pressure applications and use in the conveying of gas, vapor, water or other liquids.  While the ASTM A53 specification references nominal pipe sizes (NPS), Valmont produces tubing sizes up to 12.75" OD and in wall thicknesses up to 0.312" nominal that meet the requirements called out for in A53.  Please click on our Tubing Vs. Pipe  comparison page that lists standard pipe sizes and the equivalent tubing OD size and gauges produced by Valmont. For a complete listing of all tubing sizes produced by Valmont, please visit our Steel Tubing Product Catalog

Chemical Requirements

Below are the required chemical elements under ASTM A53 Type E for grades A and B.
Element Grade A  Grade B 
Carbon % 0.25 max  0.30 max 
Manganese %  0.95 max  1.20 max 
Phosphorous % 0.05 max  0.05 max 
Sulphur % 0.045 max  0.045 max 
Copper % 0.50 max 0.50 max 
Nickel %  0.40 max  0.40 max 
Chromium %  0.40 max  0.40 max 
Molybdenum %  0.15 max  0.15 max 
Vanadium %  0.08 max  0.08 max 

Other Testing Requirements

Below are the required physical strength requirements under ASTM A53 Type E for grades A and B. 

Test Grade A Grade B 
Yield  30,000 psi  35,000 psi 
Tensile 48,000 psi  60,000 psi 
Elongation Determined by formula Determined by formula 
In addition to the chemical and physical analysis, the following tests are required under ASTM A53:
Test Test 
Flattening   Bend Test (Less than or equal to 2.375" OD) *
Hydrostatic * Transverse Weld Tension (Equal to or greater than 8.625" OD) 
Eddy Current   


Specification Notes

  • The hydrostatic test called out in ASTM A53 is not available for Valmont sizes produced less than 4.00" OD round.  Valmont will need to take exception to that requirement at time of quotation and order.
  • The bend test for sizes less than or equal to 2.375 inch is not available to quote by Valmont.  Valmont will need to take exception to that requirement at time of quotation and order.
  • If testing requirements differ from ASTM A53 requirements listed above, please note at time of inquiry and order placement.
  • For more detailed information on the A53 specification and to purchase a copy of it, please visit the ASTM website.

Please contact one of our knowledgeable sales staff members who will assist you with any further questions regarding this specification or with your specific tubing requirements.