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ASTM A252 Structural Steel Pipe for piling and structural


ASTM A252 Structural Steel Pipe
Standard: ASTM A252:2010

COVERAGE of ASTM A252 Structural Steel Pipe:
This specification covers nominal(average)wall steel pipe piles of cylindrical shape and applies to pipe piles in which the steel cylinder acts as a permanent load-carrying member,or as a shell to form cast-in-place concrete piles.

Application of ASTM A252 Structural Steel Pipe:
For buildings, pile structure.

Main Steel Grade of ASTM A252 Structural Steel Pipe:
Grade 1,Grade 2,Grade 3

ASTM A252 Structural Steel Pipe for piling and structural

Pipe type of ASTM A252 Structural Steel Pipe:
HFW,SAW

Size of ASTM A252 Structural Steel Pipe:
HFW(1.315in~26.000") 
SAW(8.625in~84.000")

 

Chemical Composition of ASTM A252 Structural Steel Pipe:

Composition, %
Grade 1
Grade 2
Grade 3
C, max
0.26
0.26
0.26
Si, max
0.45
0.45
0.45
Mn, max
1.60
1.60
1.60
P, max
0.050
0.050
0.050
S, max
0.030
0.030
0.030

Mechanical properties of ASTM A252 Structural Steel Pipe: >

 
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

Dimension Tolerances of ASTM A252 Structural Steel Pipe: >

Outside dimensions
±1%  
Thickness
-12.5%
Out-of-roundness
2% for hollow sections having a diameter to thickness ratio not exceeding 100
Straightness
0.2% of total length and 3mm over any 1m length
Mass(m) per unit length
-5%,+15%

Nondestructive Inspection of ASTM A252 Structural Steel Pipe:
All steel pipe weld length should be tested using UT or RT

 

ASTM A252 Seamless Steel Cylinder Pipe

A252 seamless or welded steel pipe is of nomal wall thickness cylinder pipe, it is usually produced in cylindrical shape. surface imperfections exceeding 25% deep is defined as defect. Otherwise shall be repaired by welding.
MECHANICAL PROPERTIES For A 252:

  Grade 1 Grade 2 Grade 3
Tensile Strength, min, psi 50,000 60,000 66,000
Yield Strength 30,000 35,000 45,000

CHEMICAL REQUIREMENTS FOR A252:

  Phosphorus
Seamless and ERW Welded Max% 0.050
 

 

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