Welcome to ALLLAND Steel Pipe Co., Ltd.
Welcome to ALLLAND Steel Pipe Co., Ltd.
ALLLAND Steel Pipe Supply
Welcome to ALLLAND Steel Pipe Manufacturing.ASTM A252 Grade 2 is a medium-strength steel pipe pile grade widely used in foundation engineering for bridges, ports, offshore structures, and deep piling systems. As a performance-based standard, it is designed to ensure reliable load-bearing capacity, excellent weldability, and strong impact resistance under soil and marine conditions.With balanced mechanical properties and flexible manufacturing options, ASTM A252 Grade 2 steel pipes are suitable for a wide range of piling applications where structural stability and construction efficiency are critical.
Alllandsteel is a steel pipe manufacturer based in China with 25 years of experience.
The facility spans 22,000 square meters, represents a RMB 700 million investment, and operates four production lines (JCOE, ERW, SMLS, SSAW) alongside five coating lines.
With an annual production capacity of 250,000 tons, the factory covers specifications ranging from Ø406 to Ø1524 and holds multiple international certifications (API/ASTM/EN/ISO/JIS). Focused on steel pipes, creating value for you!
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ASTM A252 Grade 2, a standard under ASTM International, is a grade of structural steel pipe piles, widely used in pile foundation construction for bridges, ports, marine structures, and deep foundation engineering. This standard covers welded and seamless steel pipe piles designed to withstand axial and lateral loads in soil and marine environments.
O.D.:
219 mm – 3500 mm
W.T.:
6 mm – 50 mm+
Length:
6 m – 18 m (customizable up to 30 m+)
Manufacturing Process:
seamless (SMLS)/ welded pipes (ERW / LSAW / SSAW)
Tube Ends& Surface Treatment:
Square, Chamfered; Black Skin, Pickled, Painted/Oiled for Rust Prevention
Delivery Conditions:
Grade, Specification, Furnace Number, Standard
ASTM A252 is divided into three grades:
ALLLAND Steel Pipe combines multi-process manufacturing (SSAW/LSAW/ERW), rigorous non-destructive testing quality control, large-diameter production capacity, and advanced coating systems to provide reliable ASTM A252 steel pipe pile solutions for foundation engineering projects worldwide.
ASTM International standard ASTM A252 Grade 2 does not specify fixed dimensions. The standard specifies performance requirements, while the specific pipe dimensions are determined by the project design (i.e., foundation engineering requirements).
Outer Diameter (OD)
Wall Thickness (WT)
Length
ASTM International’s ASTM A252 Grade 2 standard, classified as a medium-strength steel pipe pile, is widely used in bridge, port, and marine foundation engineering.
Its mechanical performance design aims to ensure load-bearing capacity while also considering weldability and toughness.
| Property | ASTM A252 Grade 2 Requirement | Unit |
| Yield Strength | ≥ 345 | MPa |
| Tensile Strength | ≥ 415 | MPa |
| Elongation | ≥ 20 (depending on specimen) | % |
ASTM International’s ASTM A252 Grade 2 differs from common structural steel standards in that it does not mandate fixed chemical composition limits.
The design logic of ASTM A252 is a “performance-based standard,” meaning that the chemical composition can be flexibly adjusted as long as the engineering performance meets the requirements.
| Element | ASTM A252 Grade 2 Trend | Engineering Purpose |
| C (Carbon) | Low carbon | Improves weldability |
| Mn (Manganese) | Medium to high | Enhances strength and toughness |
| S (Sulfur) | Very low | Prevents brittleness |
| P (Phosphorus) | Very low | Improves impact resistance |
| Si (Silicon) | Controlled level | Deoxidation and strength support |
| Comparison Criteria | ASTM A252 Grade 2 | API 5L / EN Structural Steel |
| Primary Function | Deep foundation / steel pipe piles | Pipeline transportation / structural framework |
| Load Type | Axial load + impact load + soil resistance | Internal pressure + static structural load |
| Design Philosophy | Performance-based (strength + ductility focus) | Chemical composition + mechanical property controlled |
| Construction Environment | Soil, marine, offshore foundation conditions | Above-ground structures / pipeline systems |
| Impact Resistance | High (optimized for pile driving stress) | Medium (not designed for heavy impact loading) |
| Weldability | Excellent (field welding friendly) | High, but stricter welding procedure control required |
| Material Flexibility | High (no fixed chemical composition limits) | Medium (strict chemical composition requirements) |
| Cost Optimization | Optimized for foundation engineering economy | Optimized for pipeline safety and service life |
Foundation Engineering: Bridge foundations、High-rise building foundations.
Functional Role in Engineering: Load-bearing system、Lateral resistance system and Load transfer structure.
Grade 2:Balanced strength and ductility (most commonly used)
Grade 3:Higher strength for heavier load or deeper piling
In most civil and marine projects, Grade 2 is sufficient unless extreme load conditions are required.
ASTM A252 Grade 2 → used for pile foundations
API 5L → used for oil & gas pipelines
A252 focuses on impact resistance and structural load, while API 5L focuses on internal pressure resistance.
Yes. It is widely used in offshore foundations when combined with proper corrosion protection such as:
The key is not the steel grade alone, but the coating + design system.
It depends on project scale:
SSAW and LSAW are the dominant choices for engineering projects.
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