A252 Grade 1, 2 & 3 Tubing
Valmont Tubing produces round submerged arc welded steel tubing to meet ASTM specifications A252 Grade 1, Grade 2 and Grade 3. The purpose and strength levels required will determine which grade is correct. Produced in 12.375-inch, 14.00" and 16.00" OD and in wall thicknesses from 0.109" up to 0.220", Valmont's A252 tubing is used in a select number of agricultural, industrial and construction-related end uses. For a complete listing of all tubing sizes produced by Valmont, please visit our Steel Tubing Product Catalog.
Physical Requirements
Below are the physical properties required to meet the three grades that we produce ASTM A252 round tubing to.
| Grade |
Yield (min) |
Tensile (min) |
Elongation (min) |
| Grade 1 |
30,000 psi |
50,000 psi |
Determined by wall |
| Grade 2 |
35,000 psi |
60,000 psi |
Determined by wall |
| Grade 3 |
45,000 psi |
66,000 psi |
Determined by wall |
Weld Seam Information
Valmont produces the 12.375", 14.00" and 16.00" round OD sizes to ASTM A252. The submerged arc weld will leave up to a 1/4" OD weld reinforcement on the exterior of the tube.
Specification Notes
- According to ASTM A252, the outside diameter of tubes produced to this specification shall have a +/- 1% variation.
- At the time of quote and order placement, please specify the end use of the tubing and how the tubing will be used for determination whether the submerged arc weld will be acceptable for the application.
- All other mechanical tubing sizes produced by Valmont up to 12.75" round and 6.00" square and rectangle are produced as electric resistance welded (ERW) tubing.
- For more detailed information on the A252 specification and to purchase a copy, 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.