spiral welded pip

ASTM a252 Pipe

UNIASEN is a wholesale ASTM A252 exporter and factory. We supply ASTM A252 Class 1, Class 2, and Class 3 pipe piles. Suitable for infrastructure development sectors such as construction, oil, and gas industries.
Available in sizes up to 56 inches. Steel pipe types are SMLS or ERW, LSAW, and SSAW.
These pipes are of seamless construction, resistance welded, flash welded, or fusion welded, and may have a longitudinal, spiral butt, or spiral lap joints.
These steel pipes are designed to be used as permanent load-bearing members or as casings for cast-in-place concrete piles. They are cylindrical with nominal walls and are engineered to withstand the test of time and provide superior performance in various conditions.
Since 1998, we have been committed to the best quality and lowest prices.

Introduction Of ASTM 252

  • Standard: ASTM A252
  • Steel Grade: Gr.1, Gr.2, Gr.3
  • Dimensions: 6” – 56”, 168.3mm – 1422mm, DN150-DN1400
  • Thickness: 0.134”- 1”, 3.40mm – 25.4mm
  • Pipe End: Plain, Bevelled
  • Process: Open-hearth, Basic-oxygen, or Electric-furnace
  • Manufacturing: SMLS, ERW, LSAW, SSAW
  • Surface Coating: Varnishing, Oiling, Hot Dip Galvanizing
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Our ASTM A252 pipe come with a comprehensive specification that includes dimensions, production procedures, steel grades, surface coatings, end types, joint methods, and machining services.

The dimensions are designed to meet international standards, ensuring compatibility with your projects.

The surface coatings are designed to resist corrosion and enhance the lifespan of the pipes.

The end types and joint methods are varied, providing you with flexibility in your construction or manufacturing processes.

Our machining services are customized to cater to your unique requirements, guaranteeing optimal utilization of our products.

Why Choose UNIASEN Steel Pipe?

UNIASEN is a well-known enterprise in steel pipe manufacturing and export in China. Bringing over 20 years of experience, we focus on exporting steel pipes.

If you have any inquiries or concerns related to steel pipes, please don’t hesitate to get in touch with our team of knowledgeable experts.

  • Diverse steel pipe products: We offer a full range of steel pipes. These include SMLS pipes, LASW pipes, coated pipes, hollow section, and more than ten product series.
  • Standard certification: UNIASEN pipe products are manufactured by standards, including ASTM A106, API 5L, ASTM 252, and hundreds of other standards. We possess various international certifications, such as ISO 9001, ISO 14001, and ISO 45001.
  • Fast delivery: UNIASEN has 20,000 tons of pipes in stock. Products can be shipped to the port of departure within 7 days.
  • Worry-free after-sales service: UNIASEN provides professional purchasing guidance. If there are quality problems, returns and exchanges will be handled promptly.

ASTM A252 Pipe Sizes

The dimension table of our ASTM A252 pipe is meticulously designed to provide you with a clear understanding of the product.

It encompasses specifications such as the external diameter, wall thickness, length, and weight per unit length. Each dimension is meticulously calibrated to guarantee peak performance and suitability for your projects.

Whether you need pipes for large-scale construction or small-scale manufacturing, our dimension table will guide you in selecting the right product. The weight per unit length values are also provided, allowing you to plan your logistics and handling processes effectively.

Pipe Size
Common Sizes
8 5/8219.12.773.584.374.785.165.566.357.047.928.188.749.5311.1312.7
10 3/4273.12.773.053.43.583.814.174.374.554.785.165.565.846.357.097.88.749.2711.1312.7
12 3/4323.92.773.403.583.814.174.374.554.785.165.565.846.357.147.938.388.749.5311.1312.7

Chemical Requirement

ASTM A252 is a standard seamless and spiral welded steel pipe pile specification.

The standard requires steel to contain no more than 0.050% phosphorus. Other elements are consistent with general carbon steel materials.

Mechanical Requirement

The mechanical requirements of our ASTM A252 pipes are designed to ensure their durability and reliability. This includes the tensile strength, yield strength, and elongation values. These values are carefully controlled during the manufacturing process to ensure that the pipes can withstand the stresses and strains of their intended applications.

Whether you are using the pipes for load-bearing structures or as shells for concrete piles, you can be confident in their ability to perform under pressure.

A252/A252M − 19
Tensile Requirements
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 points
A Table 2 gives the computed minimum values:

ASTM A252 Grades

ASTM A252 standard pipe has three grades: A252 Grade 1, A252 Grade 2, and A252 Grade.

These grades represent different strength and chemical composition requirements for steel pipe. They meet the requirements of specific projects and applications.

ASTM A252 grades are mainly used to manufacture steel pipe piles for foundation infrastructure. They are used in civil and structural engineering.

Our team of experts can guide you in selecting the right grade for your project, ensuring you get the most out of our products.

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Information needed to order ASTM A252 pipe piles

Before purchasing pipe piles that comply with ASTM A252 specifications, the required materials need to be fully described:

  • Quantity (number of feet or lengths)
  • Material name (steel pipe pile)
  • Manufacturing method (seamless or welded; welding includes ERW, LSAW, and SSAW)
  • Grade (ASTM A252 grades have 1, 2, and 3, a total of 3 levels)
  • Dimensions (outer diameter and nominal wall thickness; see the appendix of this article for details)
  • Weight (specify whether each piece must be weighed)

ASTM A252 Grade 3: Most Commonly Used Materials

ASTM A252 Grade 3 may be the most commonly used material in some applications. It is often used on projects that resist more demanding geological and engineering conditions. This is because it has a high tensile strength of 66,000 psi (455 MPa), corrosion resistance, and good impact toughness.

However, A252 Grade 1 or Grade 2 pipe may be more suitable in some cases, particularly in relatively light civil engineering or general infrastructure projects.

The ideal choice should be based on the particular needs of the project, design criteria, and recommendations from the engineer.

ASTM A252 Applications

ASTM A252 mainly manufactures welded and seamless Spiral Steel Pipe or Straight Seam Submerged Arc Welded (SSAW) pipes. These steel pipes are commonly used in civil and structural engineering infrastructure. They are especially used in the construction of pile foundations.

Specifically, the ASTM A252 standard covers three grades of pipe. These grades of pipe are typically used in the following applications:

  • Pile Foundation: ASTM A252 steel pipe is commonly used in pile foundation projects to support the basic structures of buildings, bridges, docks, etc.
  • Civil Engineering: In some civil engineering projects, such as river embankment protection, drainage systems, and foundation reinforcement, ASTM A252 standard steel pipes are also widely used.
  • Oil and gas transportation: In some cases, ASTM A252 steel pipes can also be used in oil and gas transportation pipelines, especially under special geological conditions.
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