ASTM A252 Steel Pipe

shows-ASTM-A252-spiral-welded-pipe-on-production-line-ssaw-pipe

ASTM A252 Piling Pipe

ASTM A252 is a standard specification for welded and seamless steel pipe piles. With its specialized cylinder shape, ASTM A252 serves dual purposes – either as a stalwart load-carrier or as a protective shell for cast-in-place concrete piles. ASTM A252 pipe piles are commonly used in construction projects to provide foundational support for buildings, bridges, and other structures.

Our steel pipe piles are available in both seamless and welding processes (including ERW, SSAW, and LSAW), ensuring flexibility for diverse construction needs. The steel pipe piles are available in different grades, with ASTM A252 grade 3 being a prominent choice for its exceptional welding performances and high yield strength. Opting for ASTM A252 assures you of a product that’s tailored for strength, ensuring the base of your constructions is both solid and enduring.

ASTM A252 Specification

The ASTM A252 specification covers nominal wall cylindrical steel 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.

ASTM A252 pipe piles are manufactured using a variety of processes, including hot rolling, cold drawing, and various furnace methods. Their versatility stands out.

ASTM A252 pipes also differ from other pipelines in that they don’t require a hydrostatic test – primarily because they’re used for foundation stability rather than liquid transmission. Surface imperfections are strictly regulated, with defects deeper than 25% of the nominal wall considered unacceptable.

ASTM A252 steel pipe piles are available in different shapes, including the distinctive cylinder shape and rectangular pipe, catering to diverse construction needs. Whether you require seamless steel pipe piles or welded options, we supply a comprehensive range of products to meet your specifications.

StandardASTM A252
Steel GradeGr.1
Gr.2
Gr.3
Diamensions6” – 56”
O.D168.3mm – 1422mm
DNDN150 – DN1400
Wall Thickness0.134”- 1”
3.40mm – 25.4mm
Pipe LengthR1 (4.88m – 7.62m)
R2(7.62m – 10.67m)
Up to Request
Pipe EndPlain, Bevelled
ProcessOpen-hearth, Basic-oxygen, or Electric-furnace
ManufacturingSMLS, ERW, Flash welded,
or Fusion welded process
Corrosion PreventionLacquer, Varnish, Oiling, Galvanizing
FBE, 2LPP, 3LPP, 2LPE, 3LPE

ASTM A252 Steel Dimension Table

schematic-diagram-of-pipe-dimension

The dimensional accuracy of A252 steel pipe piles is paramount, with the outside diameter adhering to strict tolerances, and the outside diameter not varying more than plus or minus 1% from the specified dimension. Whether you’re evaluating cylindrical shapes, plain ends, or fixed lengths, the standard specifications ensure a reliable and precise fit for your construction needs.

To ensure you get the right fit for your project, our ASTM A252 steel pipe pipe comes in various dimensions. It’s crucial to select the correct size, weight, and length that suits the specific demands of your construction.

We provide a comprehensive dimension table below for A252 steel pipe piles, offering a range of options to meet the specific demands of your construction projects.

Steel Pipe Dimensions Chart ANSI B36. 10 & 36.19
Nominal
Pipe Size
Outside
Diameter
(mm)
Nominal Wall Thickness Schedule
NPSDNODSCH
5
SCH
10
SCH
20
SCH
30
SCH
Sth
SCH
40
SCH
60
SCH
XS
SCH
80
SCH
100
SCH
120
SCH
140
               
6150168.32.773.407.117.1110.9710.9714.27
8200219.12.773.766.357.048.188.1810.3112.7012.7015.0918.2620.62
10250273.03.404.196.357.809.279.2712.7012.7015.0918.2621.4425.40
12300323.83.964.576.358.389.5310.3114.2712.7017.4821.4425.40
14350355.63.966.357.929.539.5311.1315.0912.7019.0523.83
16400406.44.196.357.929.539.5312.7016.6612.7021.44
184504574.196.357.9211.139.5314.2719.0512.7023.83
205005084.786.359.5312.709.5315.0920.6212.70
225505594.786.359.5312.709.5322.2312.70
246006105.546.359.5314.279.5317.4824.6112.70
266506607.9212.709.5312.70
287007117.9212.7015.889.5312.70
307507626.357.9212.7015.889.5312.70
328008137.9212.7015.889.5317.4812.70
348508647.9212.7015.889.5317.4812.70
369009147.9212.7015.889.5319.0512.70
389509659.5312.70
40100010169.5312.70
42105010679.5312.70
44110011189.5312.70
46115011689.5312.70
48120012199.5312.70
Nominal Pipe SizeOutside Diameter (mm)Nominal Wall Thickness
NPSDNOD
52130013219.5310.3111.1311.9112.714.2715.8817.4819.0520.6222.2323.8325.4
56140014229.5310.3111.1311.9112.714.2715.8817.4819.0520.6222.2323.8325.4
60150015249.5310.3111.1311.9112.714.2715.8817.4819.0520.6222.2323.8325.4
64160016269.5310.3111.1311.9112.714.2715.8817.4819.0520.6222.2323.8325.4
68170017279.5310.3111.1311.9112.714.2715.8817.4819.0520.6222.2323.8325.4
721800182912.714.2715.8817.4819.0520.6222.2323.8325.4
761900193012.714.2715.8817.4819.0520.6222.2323.8325.4
802000203214.2715.8817.4819.0520.6222.2323.8325.4
842134
882235

Chemical Composition of ASTM A252 Steel Piling Pipe

ASTM A252 has specific criteria when it comes to chemical components. Primarily, the content of phosphorous must not exceed 0.050%. Higher amounts can compromise the steel’s durability and welding properties. While this standard specifically defines the content of phosphorous, other elements should accord with general carbon steel material norms.

Mechanical Requirements of ASTM A252 Pipe

Mechanical stability is paramount in ASTM A252 pipes. Both tensile and yield strengths are rigorously tested to ensure the pipe can withstand the intense forces of construction activities. Especially in Grade 3 pipes, the tensile strength can reach up to 455 Mpa or 66,000 psi, and yield strength can hit 310 Mpa or 45,000 psi. Whether you choose seamless or welded processes, our supply of ASTM A252 pipes aligns with these mechanical specifications, guaranteeing the reliability and performance of the steel products.

Tensile Requirements of ASTM A252 Grades

The tensile requirements for ASTM A252 vary depending on the grade of steel used. See the table below for details:

Tensile Requirements
Mechanical PropertiesGrade 1Grade 2Grade 3
Tensile strength, min, psi [MPa]50 000 [345]60 000 [415]66 000 [455]
Yield point or yield strength, min, psi [MPa]30 000 [205]35 000 [240]45 000 [310]
Basic minimum elongation for nominal wall thicknesses 5⁄16  in. [7.9 mm] or more:
Elongation in 8 in. [203.2 mm], min, %1814
Elongation in 2 in. [50.8 mm], min, %302520
For nominal wall thicknesses less than 5⁄16  in. [7.9 mm], the deduction from the basic minimum elongation in 2 in. [50.8 mm] for each 1⁄32  – in. [0.8 mm] decrease in nominal wall thickness below 5⁄16  in. [7.9 mm], in percentage points1.50A1.25A1.0A
A Table 2 gives the computed minimum values:

Steel Grades in A252 Piling Pipe

With ASTM A252, there are three primary steel grades for welded and seamless steel piling pipes: Grade 1, Grade 2, and the most commonly used, Grade 3. These classifications are based on tensile strength and yield strength, with Grade 3 being the most robust, making it a top choice for piling activities.

Whether you’re considering seamless steel pipe piles, electric resistance welded options, or thermal expanded seamless pipes, ASTM A252 Grade 3 is often the preferred choice due to its superior strength characteristics. The cylindrical shape of these steel pipe piles, whether in round pipes or rectangular forms, is meticulously designed to meet specific standards.

  • Grade 1: This grade of steel pipe piles is typically used for applications where loads are not severe. It has the lowest yield strength among the grades specified.
  • Grade 2: Grade 2 steel pipe piles have intermediate tensile and yield strength compared to Grade 1 and Grade 3. They are suitable for moderate loads and structural applications.
  • Grade 3: Grade 3 steel pipe piles have the highest tensile and yield strength among the grades specified in ASTM A252. They are used in applications where higher strength and durability are required, such as deep foundation piles under heavy loads.

ASTM A252 Pile Pipe Manufacturing Types

ASTM A252 specifies two manufacturing types for steel pipe piles:

  • Seamless: Seamless pipe piles are produced by extruding the steel to the desired shape without a welded seam. This manufacturing method ensures uniformity in wall thickness and overall quality, making them suitable for structural applications where strength and integrity are critical.
  • Welded: Welded pipe piles are manufactured by welding together steel plates or coils to form a cylindrical shape. This method allows for larger diameters and wall thicknesses to be produced economically. Welded pipe piles can be made using various welding techniques, such as submerged arc welding (SAW) or electric resistance welding (ERW).

Testing Requirements for A252 Steel Pipe Piling in Seamless and Welded

ASTM A252 specifies the following several testing requirements for steel pipe piles, whether they are manufactured using seamless or welded processes.

  • Tensile Test: This test measures the tensile strength and yield strength of the steel. It helps ensure that the material meets the minimum strength requirements specified for each grade of ASTM A252.
  • Impact Test: Impact tests assess the toughness of the steel by measuring the energy absorbed during fracture. These tests are important for determining the material’s ability to withstand sudden loading conditions.
  • Hydrostatic Test: The hydrostatic test involves subjecting the pipes to internal pressure to check for leaks or flaws. It ensures that the pipes can withstand the pressure they are designed for without any failure.
  • Non-Destructive Testing (NDT): NDT methods such as ultrasonic testing (UT) or electromagnetic testing (ET) may be required to detect internal or surface defects that could affect the integrity of the pipes.
  • Chemical Analysis: Chemical composition analysis ensures that the steel meets the required chemical composition limits for elements such as carbon, manganese, phosphorus, sulfur, and others.
  • Dimensional Inspection: Dimensional checks are performed to verify that the pipes conform to the specified dimensions, including outer diameter, wall thickness, length, and straightness.
  • Visual Inspection: Visual inspections are conducted to detect any surface imperfections, weld defects, or other visible flaws that could affect the performance or durability of the pipes.

Different than Other Pipelines

ASTM A252 pipe specifications typically do not include a hydrostatic test requirement, as these pipes are primarily used for structural purposes such as piling where they are often filled with cement or concrete and installed in foundations. ASTM A252 pipe piles serve a structural role in foundation construction, emphasizing strength, durability, and load-bearing capacity rather than the transport of fluids or gases, which distinguishes them from traditional pipelines used for transportation purposes.

Reference Resource

Our Advantages

  1. Over 25 years of experience in pipeline production and installation.
  2. Comprehensive inspection equipment.
  3. Independent product serial numbers for traceability.
  4. Advanced production equipment – Seamer high-frequency welding machine from the United States.
  5. Complete qualifications – API 5L/API 5CT/FM/UL fire pipe certification, etc.
  6. Wide range of products – independently developed solar torque tubes, highly favored in the European market.
  7. Customers spread across the globe.
  8. Excellent after-sales service and sense of responsibility.

Application Scenarios

Our steel pipes are engineered to withstand high temperatures, corrosive environments, and varying pressures, ensuring reliability and safety in the complex petrochemical processes. 

Whether it’s transferring crude oil, natural gas, or chemical intermediates, the robustness and versatility of steel pipes make them indispensable components of the plant’s infrastructure, contributing to efficient production and maintenance of stringent safety standards.

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