ASTM A252 Grade 1

ASTM A252 Grade 1

ASTM Specification A252 Grade 1 steel pipe pertains to pipe piles with a nominal (average) wall steel cylinder serving as a permanent load-carrying element or as a shell to build case-in-place concrete piles. American Standard ASTM A252 is a pipe piling material standard that is commonly utilized in construction and structural structures

Surface flaws that are more than 25% of the depth of the nominal wall are termed defects. Welding can be used to fix defects that are less than 22.5 percent of the nominal wall depth. The defect must be entirely eradicated before welding.

PRODUCT FEATURES

Specification of ASTM A252 Grade 1

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 1

ERW Welded Pipe

Phosphorus Max% 0.050

Mechanical Properties of ASTM A252 Grade 1

ITEM

ASTM A252 Grade 1

Tensile Strength, min, psi (MPa)

50000(345)

Yield point or Yield Strength, min, psi (MPa)

30000(205)

Elongation in 8 in (203.2 mm), min, %

18

Elongation in 2 in (50.8 mm), min, %

30

Calculated Minimum Elongation Values of ASTM A252 Grade 1 Pipe

Nominal Wall Thickness

Elongation in 2 inch (50.8mm), min, %

inch

mm

Grade3

5/16 or 0.312

7.9

20.00

9/32 or 0.281

7.1

19.00

1/4 or 0.250

6.4

18.00

7/32 or 0.219

5.6

17.00

3/16 or 0.188

4.8

16.00

11/64 or 0.172

4.4

15.50

5/32 or 0.156

4.0

15.00

9/64 or 0.141

3.6

14.50

1/8 or 0.125

3.2

14.00

7/64 or 0.109

2.8

13.50

Test for ASTM A252 Grade 1 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 1 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 1 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 1 Pipe Pile

Before purchasing ASTM A252 Grade 1 steel piling pipe, the following information will be required:

  1. Quantity in feet, meters, or lengths
  2. Steel pipe pile material Name
  3. Manufacturing methods in welded (ERW)
  4. Steel Grades (ASTM A252 Grade 1)
  5. Dimensions (OD and nominal wall thickness, schedule in ASME B36.10)
  6. Length in SGL, DGL, or fixed length.
  7. Ends forms beveled or plain ends
  8. Inspection related and shipping marks
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