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| Standard | A252 |
| Specification | Welded Steel Pipe Piles |
| Type | Electric Resistance Welded (ERW) |
| Size | NPS 1 TO NPS 24 [DN25 to DN 600], with nominal average wall thickness as given in ASME B 36.10M or as the customer’s requirement. |
| Outer Diameter | 1-24 inches (33.4-609.6mm) |
| Thickness | 3-12mm |
| Length | Min 3 M, Max18 M, or according to the customer’s requirement. |
| Ends | Small sizes are plain, large sizes are beveled, or according to the customer’s requirement |
| Surface Treatment | Normally bare or black varnish |
| Packaging | Small sizes below 219.1mm in bundles, large sizes in bulk |
| Testing | Chemical Composition, Heat Analysis, Product Analysis, Tensile Requirements, etc. as customer’s requirements. |
The ASTM A252 Grade 2 pipes must meet the minimum requirements for tensile strength, as outlined in the tables below. The yield point is the point at which the specimen (whether it be a beam, gage, divider, etc.) is deemed to have failed the test, and is usually determined by observing the point at which permanent deformation occurs. If no definite yield point can be observed, then the yield strength must correspond to either a 0.2% permanent offset of the original gage length or a 0.5% total extension under load. These methods for determining yield strength are essential in ensuring that the material meets the minimum requirements for use. Without these standards in place, materials could be used that are not up to par, leading to subpar performance and potential disaster. Thus, these requirements serve an important role in protecting both people and property.
- Tensile Requirements
- Minimum Elongations
• According to this standard, each length of ASTM A252 Grade 2 pipe pile must be weighed separately. The weight of the pipe must not vary more than 15% over or 5% under its theoretical weight. This weight can be calculated using the pipe’s length and its weight per unit length. If the purchase order does not specify a weight, the manufacturer must ensure that the pipe conforms to the specified calculation formula.
