ASTM A252 Grade 2
ASTM A252 Grade 2
ASTM A252 Grade 2 steel pipe is one of the most commonly used pile pipes. Piling pipes serve as the foundation of the building sector. Because of their tremendous strength, they are thought to be employed in applications that need strong structural qualities. ASTM A252 is a standard that deals with the issue. The cylindrical ASTM A252 Grade 2 Pipe is used for piling, either as a shell for a cast concrete pile or as a permanent element carrying weight in the specified application. This specification encompasses the nominal wall of the cylindrical steel piling pipe.
PRODUCT FEATURES
Specification of ASTM A252 Grade 2
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. |
Chemical Composition of ASTM A252 Grade 2
ERW Welded Pipe | Phosphorus Max% 0.050 |
Mechanical Properties of ASTM A252 Grade 2
| ITEAM |
ASTM A252 Grade 2 |
|
Tensile Strength, min, psi (MPa) |
60000(415) |
|
Yield point or Yield Strength, min, psi (MPa) |
35000(240) |
|
Elongation in 8 in (203.2 mm), min, % |
14 |
|
Elongation in 2 in (50.8 mm), min, % |
25 |
Calculated Minimum Elongation Values of ASTM A252 Grade 2 Pipe
Nominal Wall Thickness | Elongation in 2 inch (50.8mm), min, % | |
inch | mm | Grade2 |
5/16 or 0.312 | 7.9 | 25.00 |
9/32 or 0.281 | 7.1 | 23.75 |
1/4 or 0.250 | 6.4 | 22.50 |
7/32 or 0.219 | 5.6 | 21.25 |
3/16 or 0.188 | 4.8 | 20.00 |
11/64 or 0.172 | 4.4 | 19.50 |
5/32 or 0.156 | 4.0 | 18.75 |
9/64 or 0.141 | 3.6 | 18.25 |
1/8 or 0.125 | 3.2 | 17.50 |
7/64 or 0.109 | 2.8 | 16.75 |
Test for ASTM A252 Grade 2 Steel Piling Pipe
Heat Analysis: Limits for elements P, as well as heat results, should be provided to the client in MTC.
Product Analysis: The pipe diameter determines the test frequency, which is 2 samples every 200 pieces for ASTM A252 Grade 2 pipe diameters less than 14 inches, 2 samples per 100 pieces for pipe diameters 14 to 36 inches, and 2 samples per 3000 feet for pipe diameters greater than 36 inches.
Tensile Requirements: The aforesaid tensile and yield strength values must be reached. It should be noted that if a vague yield point is obtained, then test yield strength corresponding to a permanent offset of 0.2 percent of the gage length of the sample specimen, or test a total extension of 0.5 percent of the gage length under load.
Tolerance for ASTM A252 Grade 2 Steel Piling Pipe
Wall thickness: Not less than 12.5 % of the required nominal wall thickness.
Weights per foot: The weight of each particular length of pipe should not fluctuate by more than 15% above or 5% below the stated weight. Each length must be weighed individually.
Outside diameter: The diameter should not deviate more than 1% from the stipulated specification.
Required Information of Purchasing ASTM A252 Grade 2 Pipe Pile
Before purchasing ASTM A252 Grade 2Â Pipe Pile, the following information will be required:
- Quantity in feet, meters, or lengths
- Steel pipe pile material Name
- Manufacturing methods in welded (ERW)
- Steel Grades (ASTM A252 Grade 2)
- Dimensions (OD and nominal wall thickness, schedule in ASME B36.10)
- Length in SGL, DGL or fixed length.
- Ends forms beveled or plain ends
- Inspection related and shipping marks
