LSAW Piling Pipe A252 GR.3
ASTM A252 GR3 is the industry-standard specification for welded and seamless steel pipe piles. Unlike standard "fluid" pipes (like ASTM A53 or API 5L), A252 GR3 pipes are designed specifically for structural use. Their primary job is to act as a permanent load-bearing member or as a shell to form cast-in-place concrete piles.
ASTM A252 Grade 3 LSAW Piling Pipes – 66,000 PSI Min. Tensile Strength for Heavy-Duty Foundations.
ASTM A252 LSAW Steel Pipe Piling Specification Table
| Item | Description |
| Material Grade | ASTM A252 Grade 3 (High Strength) |
| Manufacturing Process | LSAW (Longitudinal Submerged Arc Welded) |
| Outside Diameter | 16" – 60" (406mm – 1524mm) |
| Wall Thickness | 6mm – 50mm (0.250" – 2.0") |
| Length | 6m – 50m (Single lengths or joined via circumferential welding) |
| End Finish | Plain End or Beveled End (30°/37.5°) with protectors |
| Surface Treatment | Bare, Black Vanish, 3PE, FBE, or Coal Tar Epoxy |
Chemical Composition and Mechanical Properties of ASTM A252 GR.3 Pipe
ASTM A252 focuses primarily on the mechanical strength. The only chemical restriction is the maximum Phosphorus content.
| Grade | Phosphorus (P), max | Tensile Strength, min | Yield Strength, min | Elongation in 2 in. (50mm), min |
| Grade 3 | 0.050% | 66,000 psi (455 MPa) | 45,000 psi (310 MPa) | Refer to Standard Table |
ASTM A252 LSAW Steel Pipe Piling Dimension Range
| Manufacturing Method | Outside Diameter (OD) Range | Wall Thickness (WT) Range |
| LSAW (Straight Seam) | 16" (406.4mm) - 60" (1524.0mm) | 6.35mm - 50.8mm |
| SSAW (Spiral Seam) | 8.625" (219.1mm) - 100" (2540.0mm) | 6.35mm - 25.4mm |
Differences Between ASTM A252 Grades: GR.1, GR.2, GR.3
| Property | Grade 1 | Grade 2 | Grade 3 |
| Yield Strength (min) | 30,000 psi (205 MPa) | 35,000 psi (240 MPa) | 45,000 psi (310 MPa) |
| Tensile Strength (min) | 50,000 psi (345 MPa) | 60,000 psi (415 MPa) | 66,000 psi (455 MPa) |
| Common Use | Light structural support | General construction | Heavy-duty/High-load foundations |
Pipe Weight Table for A252 LSAW Steel Pipe Piling
Formula: W=(OD−WT)×WT×0.02466
| Nominal Size (inch) | OD (mm) | WT (mm) | Theoretical Weight ( kg/m ) |
| 24" | 609.6 | 12.7 | 187.06 |
| 30" | 762.0 | 12.7 | 234.84 |
| 36" | 914.4 | 12.7 | 282.61 |
| 36" | 914.4 | 15.88 | 352.02 |
| 48" | 1219.2 | 19.05 | 564.12 |
ASTM A252 LSAW Steel Pipe Piling Applications
Marine Structures: Piers, wharves, jetties, and dock foundations.
Bridge Construction: Deep foundations for highway bridges and overpasses.
Infrastructure: Foundation support for skyscrapers and heavy industrial plants.
Offshore Engineering: Foundations for offshore wind turbines and oil platforms.
Reference Standards for Making ASTM A252 GR.3 Pipe
The production of A252 GR.3 LSAW pipes typically follows these global standards:
ASTM A252: Standard specification for welded and seamless steel pipe piles.
ASTM A370: Standard test methods and definitions for mechanical testing of steel products.
AWS D1.1: Structural welding code – Steel (Critical for piling projects).
ASTM A671 / A672: Often referenced for high-pressure large-diameter EFW pipe manufacturing processes.
A252 GR3 LSAW Pipe pile factory
A252 GR3 LSAW Pipe pile test and inspection
A252 GR3 Pile Pipe packaging and shipping
FAQ
What is the difference between A252 Grade 3 and A53?
The primary difference between ASTM A252 Grade 3 and ASTM A53 is their intended use and strength:
| Feature | ASTM A252 Grade 3 | ASTM A53 Grade B |
| Main Use | Structural Piling (Foundation) | Pipe for Fluids/Pressure |
| Yield Strength | 45,000 psi (Higher) | 35,000 psi (Lower) |
| Pressure Test | Not Required | Mandatory |
| Focus | Compression/Load Bearing | Leak-proof/Conveyance |
What is the tensile strength of ASTM A252 Grade 3?
The minimum tensile strength of ASTM A252 Grade 3 is: 66,000 psi (or 455 MPa)
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