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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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