ASTM A572 LSAW PIPE

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ASTM A572 LSAW PIPE
Description: Longitudinal submerged arc welding pipe,SAWL PIPE, DSAW PIPE, EFW STEEL PIPE, Straight seam welded pipe,

Hot rolled steel plate
Standard: ASTM A572
Grade: GR.1, GR.2, GR.3

Size: 245-1420MM

Wall thickness: 10-50MM

Length: 12-12.2M

Chemical element content:

Grade 1:
- Carbon (C): 0.05-0.14%
- Manganese (Mn): 0.90-1.65%
- Phosphorus (P): 0.030% max
- Sulfur (S): 0.030% max
- Silicon (Si): 0.15-0.40%
- Columbium (Cb) and/or Vanadium (V): 0.05-0.15%

Grade 2:
- Carbon (C): 0.05-0.16%
- Manganese (Mn): 0.60-1.65%
- Phosphorus (P): 0.030% max
- Sulfur (S): 0.030% max
- Silicon (Si): 0.10-0.55%
- Columbium (Cb) and/or Vanadium (V): 0.05-0.15%

Grade 3:
- Carbon (C): 0.11-0.21%
- Manganese (Mn): 0.60-1.35%
- Phosphorus (P): 0.030% max
- Sulfur (S): 0.030% max
- Silicon (Si): 0.15-0.40%
- Columbium (Cb) and/or Vanadium (V): 0.01-0.05%

All three grades of ASTM A572 have a maximum yield strength of 50 ksi (345 MPa) and a minimum tensile strength of 65 ksi (450 MPa). They are commonly used in structural applications such as buildings, bridges, and machinery. The chemical element content of these grades is carefully controlled to provide the desired mechanical properties and to ensure the steel can withstand the intended service conditions.

Processing process:

 1. Raw Material Inspection – The first step is to inspect the quality of raw material used for the manufacturing of the pipe. This includes checking the chemical composition, physical properties, and overall quality of the steel.

 2. Cutting and Beveling – The steel plates are then cut according to the required length and width. The edges of the plates are then beveled to achieve the required angle for welding.

 3. Forming – The plates are formed into the desired shape using a machine that applies high pressure.

 4. Welding – The edges of the plates are welded using the Longitudinal Submerged Arc Welding (LSAW) technique, which involves the use of a filler wire and a shielding gas.

 5. Heat Treatment – The welded pipe is then subjected to heat treatment to improve its strength and durability.

 6. Finishing – The final step involves cleaning and inspection of the pipe for any defects or imperfections. The pipe is then coated with Rust Preventative Oil (RPO) or any other protective coating.

Advantages:

 1. Firstly, it is made with higher strength and durability compared to other types of pipes, making it ideal for handling heavy loads and high pressure applications. This ensures that the pipe is resistant to wear and tear, reducing the need for frequent maintenance and replacement.

 2. Secondly, the ASTM A572 LSAW PIPE is available in a range of sizes, making it versatile enough to be used in a variety of construction projects. Whether you're building pipelines, bridges, or other industrial structures, this type of pipe can be tailored to meet your specific needs.

 3. Another advantage of the ASTM A572 LSAW PIPE is its ability to resist corrosion, rust, and other forms of degradation. This ensures that the pipe can withstand harsh environmental conditions and exposure to chemicals, ensuring a longer service life.

 4. In addition, the ASTM A572 LSAW PIPE is economically viable as its low installation, maintenance, and repair costs make it a cost-effective option for many construction projects. It can also be fabricated easily, reducing production time and costs, saving money for construction companies.

Application:

ASTM A572 is a standard specification for high-strength low-alloy structural steel. The different grades, including gr.1, gr.2, and gr.3 offer a variety of applications.

 1. One common application of ASTM A572 is in construction where it is used in the construction of buildings, bridges, and other structures. The strength and durability of the steel make it ideal for such applications, ensuring the structure's safety and longevity.

 2. Another application of ASTM A572 is in the manufacturing of heavy machinery, such as cranes and earth-moving equipment. The steel's high strength and resistance to wear and tear make it a perfect fit for such machinery.

 3. Overall, the ASTM A572 gr.1, gr.2, and gr.3 grades have a wide range of applications across various industries, including construction, manufacturing, and transportation. The steel's properties make it a dependable and robust material for critical applications, ensuring the durability and safety of the structures and equipment that rely on it.