ASTM A252 Standard Specification for Welded and Seamless Steel Pipe Piles

 1. Scope  

ASTM A252 covers welded and seamless steel pipe piles used for structural support in foundations, retaining walls, and similar applications. Pipe piles may be filled with concrete or left unfilled.

 2. Ordering Information  

Buyers should specify the following when ordering:  

- Quantity (number of pipes or total length)  

- Nominal size (outside diameter and wall thickness)  

- Length (random or specific)  

- Grade (see Section 4)  

- End finish (plain, beveled, or special)  

- Surface condition (bare or coated)  

- Additional testing (if required, e.g., hydrostatic, nondestructive testing)  

- ASTM designation and year of standard (e.g., ASTM A252-24).  

 3. Steel Grades  

Three grades based on yield strength:  

- Grade 1: Minimum yield strength = 30 ksi (205 MPa)  

- Grade 2: Minimum yield strength = 35 ksi (240 MPa)  

- Grade 3: Minimum yield strength = 45 ksi (310 MPa)  

Note: Higher grades offer increased strength for demanding load conditions.

 4. Manufacturing Process  

- Seamless or welded (electric resistance welded, submerged arc welded, etc.).  

- Welded pipes must meet specified weld quality standards.  

 5. Chemical Composition  

- Carbon, manganese, phosphorus, sulfur, and other elements must comply with limits specified for each grade.  

- Heat analysis is required; product analysis may be requested by the buyer.  

 6. Mechanical Properties  

- Tensile and yield strength: As per grade requirements (Section 3).  

- Elongation: Minimum percentages specified based on wall thickness.  

 7. Inspection and Testing Requirements  

- Visual inspection: For surface defects, straightness, and workmanship.  

- Dimensional checks: Outside diameter, wall thickness, and length.  

- Mechanical tests: Tensile tests (one per lot or as agreed).  

- Hydrostatic testing: Optional unless specified by the buyer.  

- Nondestructive testing (NDT): Optional for weld seams if required.  

 8. Marking  

Each pipe must be marked with:  

- Manufacturer’s name or trademark.  

- ASTM A252 grade.  

- Nominal size.  

- Heat number or identification.  

 9. Keywords  

Steel pipe piles, foundation support, welded pipe, seamless pipe, structural piles.  

10. Certification: Manufacturer must provide a test report confirming compliance.  

 Additional Notes  

- Latest Version: Confirm the current version (e.g., ASTM A252-24) on the ASTM website.  

- Conformance: Pipes must meet both ASTM A252 and any additional project specifications.  

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