ASTM A252 is a standard specification for welded and seamless steel pipe piles used in structural and architectural construction. The standard includes three grades (Grade 1, Grade 2, Grade 3), among which Grade 3 is the most commonly used due to its higher strength and broader engineering applicability.
ASTM A252 Pipe Pile Supply Range
Gnee supplies steel pipe piles that fully comply with ASTM A252 with the following options:
Grades: 1, 2, 3
Sizes: Seamless or welded, up to 48 inches
Manufacturing Types:
Seamless
Welded: ERW, LSAW, SSAW, DSAW
Wall Thickness: STD, SCH 40, XS, SCH 80, XXS, SCH 160
Length: 6m, 12m, or customized
Ends: Beveled or flat
Coating Options: FBE, 3PE, galvanized
ASTM A252 - Most Common Pipe Pile Material
ASTM A252 Grade 3 is the most widely used grade due to its superior mechanical strength. It can be manufactured as both seamless and welded, although welded types are more common for large-diameter applications.
Mechanical Properties:
Tensile Strength: 455 MPa (66,000 psi)
Yield Strength: 310 MPa (45,000 psi)
These properties make Grade 3 an excellent choice for heavy load-bearing and foundation applications.
Standard Scope of ASTM A252
ASTM A252 covers cylindrical welded and seamless steel pipe piles with nominal wall thickness. This standard does not apply to rectangular tubing.
Applications:
Bearing piles for foundational support
Load-bearing underground structures
Pipes filled with concrete at construction sites
Structural frameworks requiring axial capacity
The standard is originally written in inch-pound units but may also be converted to SI units for engineering reference.
Pipe Pile Manufacturing Types
1. Seamless Pipe Piles
Manufactured through:
Hot-rolled seamless process
Cold-drawn seamless process
Hot-expanded seamless process
2. Welded Pipe Piles
Common welded types include:
ERW: Electric Resistance Welded
LSAW: Longitudinal Submerged Arc Welded
SSAW / DSAW: Spiral Submerged Arc Welded
Chemical Composition & Mechanical Requirements
Chemical Limit:
Phosphorus (P): ≤ 0.050%
High phosphorus levels can cause brittleness and negatively affect welding performance.
Mechanical Tests Required:
Heat Analysis: Must be listed on the MTC (Mill Test Certificate).
Product Analysis:
Pipe <14 in: 2 samples per 200 pipes
14–36 in: 2 samples per 100 pipes
36 in: 2 samples per 3000 ft
Tension Test:
Must meet tensile and yield requirements of ASTM A252
If yield point is not clearly defined, yield strength is determined at:
0.2% offset, or
0.5% total extension under load
Dimensional & Weight Tolerances
Outer Diameter Tolerance: ±1%
Wall Thickness Tolerance: ±12%
Weight Tolerance: +15% / −5% of theoretical weight
Lengths:
SRL (Single Random Length)
DRL (Double Random Length)
Fixed lengths: 20 ft or 40 ft
Custom lengths available
Hydrostatic Test Requirement
Hydrostatic testing is NOT required under ASTM A252.
This is because pipe piles are primarily structural members that are usually filled with concrete rather than used for fluid transportation.
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