ASTM A252 is a standard established by the American Society for Testing and Materials (ASTM) for welded and seamless steel pipe piles, with the latest version being ASTM A252/A252M-22. This standard specifies the material requirements, dimensions, mechanical properties, and inspection criteria for steel pipe piles used in structural support applications, including buildings, bridges, docks, and other engineering fields.
Steel Grade Classifications:
Gr. 1: Minimum yield strength ≥ 248 MPa (36 ksi) – suitable for light to moderate loads.
Gr. 2: Minimum yield strength ≥ 345 MPa (50 ksi) – suitable for moderate loads.
Gr. 3: Minimum yield strength ≥ 414 MPa (60 ksi) – designed for heavy loads or harsh environments.
Specification
Size : OD:406-1422.40mm WT:1.65-40mm, Length: 6mtr-20mtr
Standard & Grade :ASTM A250 Grades 1,2,3
Ends:Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends
Coating: 3PE Coating;3PP Coating;FBE Coating;Epoxy Coating;Special Painting
Mechanical Properties – Tensile Requirement
|
|
Grade 1 |
Grade 2 |
Grade 3 |
|
Tensile Strength, min, psi |
50,000 |
60,000 |
66,000 |
|
Yield Strength |
30,000 |
35,000 |
45,000 |
Chemical Requirements For A252
|
|
Phosphorus |
|
Seamless and Welded |
Max% 0.050 |
•Testing Requirements for seamless and welded A252 steel piling pipe
-Hydrostatic Testing: Not specified.
-Mechanical Tests:
Tensile Test: Either longitudinal or transverse at option of manufacturer.
- Number of Tests: One tensile test per 200 lengths.
•Permissible Variations for A252 steel piling pipe
-Wall thickness: Not more than 12.5% under the nominal wall thickness specified.
-Weights per foot: The weight of any individual length of pipe shall not vary more than 15% over or 5% under the weight specified. Each individual length shall be weighed separately.
-Outside diameter: Shall not vary more than plus or minus 1% from the diameter specified.
•Lengths of A252 steel piling pipe
Steel Tubular Products A252 steel piling pipe may be ordered in single or double random lengths or in uniform lengths.
-Single random – 16' – 25' inclusive
-Double random – Over 25' with a minimum average of 35'
-Uniform – Plus or minus 1" on length specified
•Marking Requirements
Rolled, die-stamped, or paint-stenciled (manufacturer's option).
-Manufacturer's name, brand, or trademark
-Heat number
-Method of pipe manufacture
-Size, weight, length
-Wall thickness
-ASTM A252 and steel grade
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