ASTM A252 Grade 2 ERW Steel Pipe is a welded steel pipe manufactured under ASTM A252 standard specification, designed specifically for piling and deep foundation applications. Produced via Electric Resistance Welding (ERW) process, it serves as a permanent load-carrying structural member or a shell for cast-in-place concrete piles.
With balanced mechanical properties, excellent weldability, and cost-effectiveness, ASTM A252 Grade 2 is the most commonly specified grade for general to medium-load-bearing piling applications such as bridge foundations, building supports, and marine piling
| Parameter | Specification |
| Standard | ASTM A252 / A252M |
| Grade | Grade 2 |
| Manufacturing Process | Electric Resistance Welding (ERW) |
| Outer Diameter (OD) | 1/2" – 56" (21.3mm – 1422mm) or custom |
| Wall Thickness | 1.65mm – 60mm (Sch10s – XXS) or custom |
| Length | 3m – 18m (SRL, DRL, or fixed length as required) |
| End Finish | Plain Ends (PE) / Beveled Ends (30°±5°) |
| Surface Treatment | Bare / Black varnish / Anti-rust oil / Hot dip galvanized |
| Testing | Tensile Test, Flattening Test, Hydrostatic Test, UT, X-ray |
| Packaging | Steel bundle + plastic end caps |
| MOQ | Negotiable |
| Delivery Time | 20–30 days after deposit |
| Payment Terms | T/T, L/C, Western Union |
| Mechanical Properties - ASTM A252 Grade 2 | ||
| Property | Value (MPa) | Value (psi) |
| Minimum Yield Strength | 240 MPa | 35,000 psi |
| Minimum Tensile Strength | 415 MPa | 60,000 psi |
| Minimum Elongation | 25% (in 2 inches) | - |
| Chemical Composition (max limits) | |
| Element | Maximum % |
| Carbon (C) | 0.26% |
| Manganese (Mn) | 1.60% |
| Silicon (Si) | 0.45% |
| Phosphorus (P) | 0.05% |
| Sulfur (S) | 0.03% |
Dimensional Tolerances
| Parameter | Tolerance |
| Outside Diameter (OD ≤ 508mm) | ±1% or ±1.0mm (whichever greater) |
| Outside Diameter (OD > 508mm) | ±1% or ±4.0mm (whichever greater) |
| Wall Thickness | ±12.5% of nominal thickness |
| Weight | +15% / -5% of theoretical weight |
| Straightness | ≤0.1% of total length |
| Out-of-roundness | 2% for D/t ratio ≤100 |
Applications
》Bridge Foundations – Main pier pile foundations supporting bridge structures
》High-Rise Buildings – Soft soil foundation reinforcement and deep foundation support
》Ports & Wharves – Withstand vessel docking impacts and wave erosion
》Highway & Railway Foundations – Deep foundation piling for transportation infrastructure
》Hydraulic Engineering – Dam reinforcement and hydropower station foundations
》Offshore Construction – Offshore platform foundation supports
》Communication Towers – Column foundations for telecommunication infrastructure
Grade Comparison (ASTM A252 Grades 1, 2, 3)
|
Aspect |
Grade 1 |
Grade 2 (Our Product) |
Grade 3 |
|
Minimum Yield Strength |
205 MPa (30 ksi) |
240 MPa (35 ksi) |
310 MPa (45 ksi) |
|
Minimum Tensile Strength |
345 MPa (50 ksi) |
415 MPa (60 ksi) |
455 MPa (66 ksi) |
|
Common Use |
Light loads, non-critical general construction |
General soils, most piling projects (most common) |
Heavy loads, marine, deep piles, hard soils/rock |
|
Cost |
Lowest |
Standard (economical) |
Highest |
|
Driving Difficulty |
Soft soils only |
General soils, dense sand, gravel |
Hard soils, rock |
PACKING & SHIPPING
Packaging:
OD < 219.1mm: Steel strips bundling + plastic end caps protection
OD ≥ 219.1mm: Bulk loading + end caps protection
Beveled ends protected with plastic caps
Shipping:
By sea freight (20ft / 40ft containers or break bulk vessel)
Delivery term: FOB Tianjin / CFR / CIF
Leading time: 20–30 days after receiving deposit or L/C
FAQ
Q1: What is the difference between ASTM A252 Grade 2 and Grade 3?
Grade 2 offers yield strength of 240 MPa and tensile strength of 415 MPa, suitable for general piling applications. Grade 3 provides higher strength (310 MPa yield, 455 MPa tensile) for heavy-load structures. Grade 2 offers the best balance of strength and cost for most construction projects.
Q2: Can you provide beveled ends?
Yes, we provide 30°±5° beveled ends for field welding, or plain ends as required.
Q3: Do you support third-party inspection?
Yes, we welcome SGS, BV, TUV, or any TPI designated by customers to inspect before shipment.
Q4: What is your MOQ?
MOQ is negotiable based on diameter and wall thickness. Contact us for a tailored quote.
Q5: Can you provide custom lengths?
Yes, we support custom lengths from 3m to 18m, or longer upon request.
Q6: Can you provide samples?
Yes, samples are available upon request. Contact our sales team for details.
Q7: What payment terms do you accept?
T/T (30% deposit + 70% balance before shipment), L/C at sight, Western Union.
Contact US
Our address
Rm1406,14th/F No 208, Hongqi Road, Nankai Dist, Tianjin City ,China
Phone Number ( WhatsApp/ Wechat)
+86 16622033809
alisa@tjshenzhoutong.com
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