ASTM A252 Seamless Piling Pipe

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ASTM A252 Seamless Piling pipe
Description: ASTM A252 GR.3 SMLS Piling pipe, ASTM A252 GR.3 Seamless Piling Pipe
Standard: ASTM A252
Grade: GR.1, GR.2, GR.3

Size: 21.3MM-1020MM

Thickness: 1.5MM-100MM

Outside diameter tolerance: ±1%

Wall thickness tolerance: ±12.5%

Length: 12-22M, normally 12M, also depends on your requirements

Anti corrosion coating: Varnish coating

Processing process:

 1. Choose high-quality raw materials. Carbon steel used in the production of A252 seamless piling pipe

 2. Heating and rolling solid steel pipe until desired size and shape is achieved.

 3. Carry out heat treatment process. The pipes are heated to a specific temperature and then cooled at a controlled rate.

 4. Testing: After the heat treatment process is completed, the pipeline will undergo a series of tests, including ultrasonic testing, hydrostatic testing and visual inspection.

 5. Finishing: The final step in the machining process is finishing the pipe. This includes cutting the pipe to the required length, applying any necessary coatings or finishes, and preparing the pipe for transportation.

Differences between GR.1, GR.2, GR.3:

1. ASTM A252 GR.1: Grade 1 steel is the most commonly used type of steel and is ideal for deep foundations and structural supports. It has a minimum yield strength of 30,000 psi and a minimum tensile strength of 50,000 psi. It is characterized by weldability and good impact resistance.

2. ASTM A252 GR.2: Grade 2 steel has a higher minimum yield strength of 35,000 psi and a minimum tensile strength of 60,000 psi. It is used when required to support heavier loads or harsher environmental conditions.

3. ASTM A252 GR.3: Grade 3 steel has the highest minimum yield and tensile strengths of the three grades, 45,000 and 66,000 psi respectively. It is used in applications requiring the highest strength and durability, such as offshore oil rigs and subsea pipelines.

Advantages: 

 1. ASTM A252 seamless piling pipe can withstand high pressure, high temperature and other extreme conditions

 2. Using ASTM A252 seamless piling pipe is cost-effective. Seamless pipes have higher material requirements and strong durability, which reduces the cost of maintaining steel pipes for enterprises.

 3. ASTM A252 seamless piling pipes are available in a variety of sizes, shapes and styles, making them easy to install and adapt to different construction projects.

Application: 

 1. ASTM A252 seamless piling pipe is mainly used in deep foundation construction of buildings, bridges and other large structures.

 2. ASTM A252 seamless piling pipe is used in the construction of offshore oil platforms and other marine structures.

 3. ASTM A252 Seamless Piling Pipe is also widely used in the construction of docks and ports, and in the installation of underground utility systems, such as gas and water pipes.