Round ASTM A252 ERW Welded Steel Tube
ASTM A252 Seamless and Welded piling steel pipe
Type: Seamless and Welded Carbon Steel Tube
Application: For piling purposes and load carrying
Size: Outside diameter: Shall not vary more than plus or minus 1% from the diameter specified.
Wall thickness: Not more than 12.5% under the nominal wall thickness specified.
Process:The steel shall be made by one or more of the following processses:open-hearth,basic-oxygen or electric-furnace.
Seamless Pipe Pile
Seamless pipe pile referred as hot rolled or cold drawn and thermal expanded seamless pipe.
Welded Pipe Pile
Welded pipe pile including ERW (electric resistance welded), flash welded, fusion welded or sub-merged welded SSAW or LSAW. Longitudinal or helical spiral welded.
Before purchase the pipe piles under ASTM A252 specification, below information will be required:
a. Quantity in feet, meter, or number of lengths
b. Material Name in steel pipe pile
c. Manufacturing types in seamless or welded (ERW, EFW, LSAW, SSAW)
d. Grades (There are three levels of ASTM A252 Grade 3, 2, and 1)
e. Size (OD and nominal wall thickness, schedule in ASME B36.10)
f. Length in SGL, DGL or fixed length.
g. Ends types beveled or plain ends
h. Inspection related and shipping mark
Chemical Composition:
| Composition, % | C, max | Si, max | Mn, max | P, max | S, max |
| Grade 1 | 0.26 | 0.45 | 1.6 | 0.05 | 0.03 |
| Grade 2 | 0.26 | 0.45 | 1.6 | 0.05 | 0.03 |
| Grade 3 | 0.26 | 0.45 | 1.6 | 0.05 | 0.03 |
The standard has a limit for element P (phosphorous) maximum 0.050%, since P will make steel fragile, and most important is not good for welding performances.
Mechanical Proporties:
| Mechanical Property | Grade 1 | Grade 2 | Grade 3 |
| Minimum Yield strength ReH MPa | 205 | 240 | 310 |
| Tensile strength Rm MPa | 345 | 415 | 455 |
| Minimum elongation A % | 30 | 25 | 20 |
Product Show:
Q: Are you trading company or manufacturer?
A: We are a professional steel pipes materials manufacturer.
Q: How long is your delivery time?
A: Generally it takes 7-14 days if the goods are in stock or 30-60 days if there is no stock, this mainly depends on quantity.
Q: Do you provide free samples?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
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