ASTM A252 Grade 2 Steel Piling Pipe
ASTM A252 Grade2 Steel Pipe is made of carbon steel. It allows for both seamless and welded pipe manufacturing processes. Welded pipes are usually produced by electric resistance welding (ERW) or submerged arc welding (SAW). ASTM A252 Grade 2 Steel Pipe is one of the most commonly used pile pipes. We have a wide range of sizes for customers to choose from. In addition, we also provide factory price and various tests, including flattening test, hardness test, dimensional inspection, etc. Come and get a quote.
Specification Of ASTM A252 Grade 2
| Standard | A252 Grade 2 |
| 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 or as Per Clients Need |
| Length | Min 3 M, Max18 M, or according to the customer’s requirement. |
| Origin | China |
| Monthly Output | 20 million-30 million pieces per month |
| Packaging | Small sizes below 219.1mm in bundles, large sizes in bulk |
| Ends | Small sizes are plain, large sizes are beveled, or according to the customer’s requirement |
| Surface Treatment | Normally bare or black varnish |
| Testing | Chemical Composition, Heat Analysis, Product Analysis, Tensile Requirements, etc. as customer’s requirements. |
Mechanical Properties Of ASTM A252 Grade 2 Piling Pipe
| NorE 1–Where an ellipsis (…) appears in this table, there is no requirement. | ||||
|---|---|---|---|---|
| Tensile strength, min, psi [MPa] | Grade 1 | Grade 2 | Grade 3 | |
| Yield point or yield strength, min, psi [MPa] | 50000[345] | 60000[415] | 60000[455] | |
| Basic minimum elongation for nominal wall thicknesses % in. [7.9 mm] or more: | 30000[205] | 35000[240] | 45000[310] | |
| Elongation in 8 in.[2032 mm] min, % | 18 | 14 | – | |
| Elongation in 2 in.[50.8 mm] min.% | 30 | 25 | 20 | |
| For nominal wall thicknesses less than 5/16 in.[7.9 mm], the deduction from the basic minimum elongation in 2 in. [50.8 mm] for each 1/32 – in.[0.8 mm] decrease in nominal wall thickness below 5/16 in. [7.9 mm], in percentage points | 1.5A | 1.25A | 1.0A | |
| A Table 2 gives the computed minimum values: | ||||
| Nominal Wall Thickness | Elongation in 2 in.[50.8mm], min,% | |||
|---|---|---|---|---|
| in. | mm | Grade 1 | Grade 2 | Grade 3 |
| 5/16 or 0.312 | 7.9 | 30.00 | 25.00 | 20.00 |
| 9/32 or 0.281 | 7.1 | 28.50 | 23.75 | 19.00 |
| 1/4 0r 0.250 | 6.4 | 27.00 | 22.50 | 18.00 |
| 7/32 or 0.219 | 5.6 | 25.50 | 21.25 | 17.00 |
| 3/16 or 0.188 | 4.8 | 24.00 | 20.00 | 16.00 |
| 11/64 or 0.172 | 4.4 | 23.25 | 19.50 | 15.50 |
| 5/32 or 0.156 | 4.0 | 22.50 | 18.75 | 15.00 |
| 9/64 or 0.141 | 3.6 | 21.75 | 18.25 | 14.50 |
| 1/8 or 0.125 | 3.2 | 21.00 | 17.50 | 14.00 |
| 7/64 or 0.109 | 2.8 | 20.25 | 16.75 | 13.50 |
| A The above table gives the calculated minimum elongation values for various nominal wall thicknesses. Where the specified nominal wall thickness is intermediate to those shown above, the minimum elongation value shall be determined as follows: | ||||
| Grade | ||||
| 1 | E = 48t + 15.00[E = 1.90t +15.00] | |||
| 2 | E = 40t + 12.50[E = 1.56t +12.50] | |||
| 3 | E = 32t + 10.00[E = 1.25t +10.00] | |||
| where: | ||||
| E = elongation in 2 in..%and | ||||
| t = specofoed nominal wall thickness. in.[mm]. | ||||
Permissible Variations Of ASTM A252 Steel Piling Pipe
| Item | Tolerance |
|---|---|
| Unit Weight | +15%,-5% |
| Outside Diameter | ±1% |
| Wall Thickness | ±12.5% |
- According to this standard, each length of ASTM A252 Grade 2 pipe pile must be weighed separately. The weight of the pipe must not vary more than 15% over or 5% under its theoretical weight. This weight can be calculated using the pipe’s length and its weight per unit length. If the purchase order does not specify a weight, the manufacturer must ensure that the pipe conforms to the specified calculation formula.
- The outside diameter of pipe piles shall not deviate by more than 1% from the diameter specified.
- The wall thickness at any location shall not deviate by more than 12.5% from the nominal thickness.
More Information About ASTM A252 Piling Pipe
ASTM A252 steel piling pipe is a widely used material in various construction and engineering applications due to its structural integrity and durability. Here are some of the primary applications.
Why Choose Gnee ASTM A252 Grade 2 pipe?
In addition, our ASTM A252 grade 2 piling pipes have been successfully exported to more than 60 countries such as Vietnam, Malaysia, Indonesia, Pakistan, UAE, and South Korea, etc. Many regular customers visit our company and factory and make multiple orders.
What Services Does Gnee Provide?
Gnee can provide the following measurement services for pipe:
1. Dimensional measurement: Measure the dimensional parameters such as length, width, and thickness by measuring instruments to ensure the pipe is qualified and meets the design requirements.
2. Surface measurement: Measure parameters such as flatness, unevenness, and surface roughness of pipe surface to help ensure that the quality and surface state of the pipe meet the requirements.
3. Thickness measurement: Use a thickness measuring instrument to accurately measure the thickness of the pipe to ensure that it meets the design requirements.
4. Material measurement: Use material analysis instruments to measure the chemical composition and mechanical properties of the product to ensure that the quality and performance meet the requirements.
5. Bending and Deformation Measurements: The degree of bending and deformation of the steel pipe is measured and monitored by using tools such as bending measuring instruments and displacement sensors to ensure that it is within the allowable range.
Gnee can customize the size and shape of steel pipes for your project according to specific project needs. The custom design of the pipe is carried out by a professional engineer and design team. Based on the requirements and constraints of the project, they will use calculation and simulation tools, combined with experience and technical knowledge, to optimize the steel pipe design to meet the specific needs of your engineering.
● According to the strength requirements of structural design, adjust the thickness, width, and length of pipes.
● The shape of the steel pipe can be designed according to the characteristics of the project.
● If you consider the convenience of installation and maintenance, we can also add openings and passages for easy access and operation in the design for areas that require frequent maintenance.
Purchasing Gnee steel pipe can provide the following deep processing services. We can customize according to the specific needs of customers to meet the requirements.
Cutting service: Pipe can be custom cut to obtain the desired shape and size according to the needs of customers. For example, flame cutting, plasma cutting, laser cutting, etc., can cut steel pipes into required blocks, special-shaped parts.
Bending and forming: Pipes are bent and formed by stress application and appropriate processes to obtain the desired shape.
Welding service: Pipe can be subjected to various types of welding services, including manual arc welding, gas-shielded welding, laser welding, etc.
Turning and machining of holes: Turning and machining of holes in pipes by using machining equipment. These processes produce smooth surfaces, precise holes and threads to meet specific assembly requirements.
Surface treatment: In order to improve the corrosion resistance and aesthetics of the steel pipe, surface treatment can be carried out. This includes methods such as spraying, hot-dip galvanizing, electroplating, etc. to add a protective layer and provide corrosion resistance.
Gnee can provide the following testing services through third-party testing agencies. These third-party testing services can provide independent, objective verification that pipes comply with relevant standards and regulations.
Material chemical composition analysis: Through chemical composition analysis, determine whether the composition of the steel pipe meets the standard requirements.
Mechanical performance test: Mechanical performance test includes tensile test, impact test, bending test, etc., which are used to determine whether the mechanical properties such as strength, toughness and ductility of products meet the specified requirements.
Metallographic testing: Through metallographic testing, check the structure, grain size, non-metallic inclusions, etc. of pipes to evaluate their quality and performance.
Corrosion performance test: Through the corrosion performance test, evaluate the corrosion resistance of pipes, including salt spray corrosion resistance, chemical corrosion resistance, etc.
Hardness test: Hardness test is used to measure the hardness of pipe, and its strength and wear resistance can be evaluated according to the hardness value.
Ultrasonic flaw detection: Ultrasonic flaw detection is used to detect internal defects of pipes, such as cracks, pores, inclusions, etc.
