Piling Pipe,steel tubular piles,Piling Steel Pipes

Piling Pipe

Scope	Steel pipe piling for permanent, structural load-carrying member or as a shell to form cast-in-place concrete piles.
Specification	ASTM A252, Grades 2 and 3/modified to 50 ksi min. yield
Manufacturing Process	Straight-seam electric resistance weld (ERW)
Size (OD)	8.625, 10.750 and 12.750
Gauge/Wall Thickness	0.250, 0.313, 0.375 and 0.500 (nominal)
Strength/Elongation Properties	Yield: 50 ksi min., 60 ksi min., 75 ksi min., 80 ksi min. Aim to. Tensile: 66 ksi min. Elongation: 20% min.
Straightness Tolerance	1/8” x length (in feet), divided by five

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Specification

Piling Steel Pipe Specification

Scope	Steel pipe piling for permanent, structural load-carrying member or as a shell to form cast-in-place concrete piles.
Specification	ASTM A252, Grades 2 and 3/modified to 50 ksi min. yield
Manufacturing Process	Straight-seam electric resistance weld (ERW)
Size (OD)	8.625, 10.750 and 12.750
Gauge/Wall Thickness	0.250, 0.313, 0.375 and 0.500 (nominal)
Strength/Elongation Properties	Yield: 50 ksi min., 60 ksi min., 75 ksi min., 80 ksi min. Aim to. Tensile: 66 ksi min. Elongation: 20% min.
Straightness Tolerance	1/8” x length (in feet), divided by five
Weight Tolerance	Weight must not vary more than 15% over or 5% under. Piling weight controlled by utilizing minimum-gauge coil stock. Searing does not weigh each individual length of pipe.
Chemical Composition	Carbon: 0.23 max. Manganese: 1.35 max. Meets ASTM A252
Carbon Equivalent (CE)	0.45 max (per AWS D1.1)
Weldability	AWD D1.1 base metal Can be welded with AWS prequalified welding procedures
Testing	ASTM A370: In-house flattening and cone test per heat
Material Test Reports	Material test reports are furnished for each length of pipe. Steel mill coil certifications/gauge certifications available upon request.
Marking/ID Stamp	Ink stenciling on one side of the OD, ID stamping when requested

STRENGTH LEVELS	GRADE 2	GRADE 3
Yield Strength	35,000 psi min.	45,000 psi min.
Tensile Strength	60,000 psi min.	66,000 psi min.
Elongation % in 2” Min.	25	20
Meets AWS D1.1 Base Metal Welding requirements	Yes	Yes

Piling Steel Pipe Image

Piling Steel Pipe

Advantages of Pipe Piles

As opposed to other options for deep foundations, pipe piles offer several advantages.

1. They lower costs because they are capable of being tailored to meet specific load bearing requirements.

2. They are simple to drive and install, and they’re easy to inspect and test before use.

3. They are sturdy and unlikely to crack or otherwise get damaged while they are being driven into the ground.

4. Additionally, pipe piles can be added to bolster foundation support after construction and during various phases of construction.

Application of Steel Pipe Pill

Pipe piles can be used for the creation of the following:

• Building foundations

• Bridge foundations

• Highway foundations

• Marine structure foundations

• Dock foundations

• Offshore construction foundations

• Railway foundations

• Oilfield construction foundations

• Communication tower foundations

• Column foundations

Types of Piling Steel Pipes

Based on the different soil environments and requirements, Pipe piling could be divided in open end pile (Unplugged pipe pile) and close end pile pipe(Plugged pipe pile).

Process

As soon as we receive your pipe pile designs, our fabrication division will begin creating your pipe piling. Fabrication is usually carried out in these steps:

Cut out and etch steel plate with CNC plasma cutters.

Bevel the plate ends (if required) to ensure quality welding.

Roll the plate into cylinders.

Weld the longitudinal seam of the cylinder.

Connect cylinders by welding the circumferential seam using our sophisticated submerged arc process.

Forward the pipe pile to T BAILEY INC.’s testing division, where the completed pipe piling must pass rigorous inspection before shipment to the job site.

If project specifies, the steel is blasted and coated to increase longevity.

Tests

Our Testing Capabilities Include:

Visual inspection and step by step monitoring of all processes to ensure the best possible quality

Radiographic Testing (RT)

Ultrasonic Testing (UT)

Dye Penetrant Testing (PT)

Magnetic Particle Testing (MT)

Heat treating and stress relieving

Hardness Testing

Impact Testing

Positive Material Identification (PMI)

Leak Testing

Hydrostatic Testing, up to 2,500 psig

Environmental monitoring and reporting

Soluble Salt Testing

Full blast and lining profile measuring

Dry film thickness testing

Adhesion Testing

Lining continuity (holiday) testing

Packing & Delivery

Tolerance table

Piling Steel Pipe Weight and Dimension Tolerances

Pipe pile weights per units (Feet, meter or lengths)
Tolerance allowed: A252 pipe pile weight shall be in +15% or -5% of theoretic weight. OD tolerances at +/-1%, wall thickness +/- 12%.
Lengths: As specified SRL, DRL, or fixed length 20 ft or 40 ft and customized.

Permissible Variations for A252 Piling Steel Pipe

Wall thickness: Not more than 12.5% under the nominal wall thickness specified.

Weights per foot: The weight of any individual length of pipe shall not vary more than 15% over or 5% under the weight specified. Each individual length shall be weighed separately.

Outside diameter: Shall not vary more than plus or minus 1% from the diameter specified.

TOLERANCES	ALL GRADES
OD Size
>1.9 - 2.5 incl.	+/- 1%
>2.5 - 3.5 incl.	+/- 1%
>3.5 - 5.5 incl.	+/- 1%
>5.5	+/- 1%
Wall Thickness	–12.5%
Weight	+15% / –5%
Straightness (max. allowed)	Not specified

Chemical composition

Chemical Requirements for A252 Steel Pipe

	Phosphorus
Seamless and ERW Welded	Max% 0.050

Chemical Composition			Carbon: 0.23 max. Manganese: 1.35 max. Meets ASTM A252
	CHEMISTRY LEVELS	ALL GRADES
	Carbon	N/A
	Manganese	N/A
	Phosphorus	0.050 max.
	Sulphur	N/A
	Silicon	N/A
	Grain Refining Elements	N/A