SSAW Spiral Welded Pile Pipes ASTM A252

SSAW Spiral Welded Pile Pipes ASTM A252

A252 Comparitive Specifications The American Society for Testing and Materials specification ASTM A252 is the standard for welded and seamless steel pipe piles. This specification covers nominal (average) wall steel pipe piles of cylindrical shape, and it applies to pipe piles in which the steel...

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A252 Comparitive Specifications

The American Society for Testing and Materials specification ASTM A252 is the standard for welded and seamless steel pipe piles. This specification covers nominal (average) wall steel pipe piles of cylindrical shape, and it applies to pipe piles in which the steel cylinder acts as a permanent load-carrying member, or as a shell, to form cast-in-place concrete piles.

MECHANICAL PROPERTIES – TENSILE REQUIREMENTS


Grade 1Grade 2Grade 3
Tensile Strength, min, psi50,00060,00066,000
Yield Strength30,00035,00045,000

CHEMICAL REQUIREMENTS FOR A252


Phosphorus
Seamless and ERW WeldedMax% 0.050



Testing requirements for seamless and welded A252 steel piling pipe


    • Tensile Test: Either longitudinal or transverse at option of manufacturer.

    • Hydrostatic Testing: Not specified.

    • Mechanical Tests:

    • 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.

    • Surface imperfections exceeding 25% of the nominal wall in depth are considered defects. Defects not exceeding 22.5% of the nominal wall in depth may be repaired by welding. Before welding, the defect shall be completely removed.

  • Lengths of A252 steel piling pipe

    ASTM  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

  • Cangzhou Galaxy company can produce OD219-3500MM, WT: 6-25MM, LENGTH 6-40M SSAW and LSAW welded pile pipes.




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