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ASTM A252/A252M
ASTM A252 is the standard specification for welded and seamless steel pipe piles. It covers the nominal wall thickness of cylinder shape steel pipe, rectangular pipe is not included. These round pipes are used for piling purposes, playing as a permanent role of load carrying and bearing the pressure. Further more, to act as a tank shell to fill with the concrete piles at sight of the project.
Specification
Grade: 1, 2, 3
OD: NPS 6" - 56" (168.3 - 1422mm)
WT: 0.134" - 2" (3.40 - 50.8mm)
Length: 6 - 32m
types for ASTM A252 pipe pile
ASTM A252 pipe pile manufactured types in seamless and welded.
Seamless pipe pile
Seamless pipe pile includes manufacturing processes in hot rolled, cold drawn and thermal expanded seamless pipe.
Welded pipe pile
Welded pipe pile referred as ERW (electric resistance welded), LSAW (Longitudinal Arc Sub-merged Welding) and DSAW/SSAW (Spiral Arc Welded Pipe).
Based on the tensile strength and the yield strength the ASTM A252 is classified into three categories/grades:
a. ASTM A252 Grade 1
b. ASTM A252 Grade 2
c. ASTM A252 Grade 3
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 steel shall contain no more than 0.050% phosphorous.
ASTM A252 Piling Pipe Mechanical properties
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 |
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