Description

ASTM A105 is a specification established by the American Society for Testing and Materials (ASTM) that covers forged carbon steel piping components for ambient- and higher-temperature service in pressure systems. These components include flanges, fittings, valves, and similar parts ordered either to dimensions specified by the purchaser or to dimensional standards such as the ASME and API specifications.

Contact us now, you will get cheap price with shipping cost from Mild Carbon Steel Square Tube supplier & factory in China.

Metal In China® has a large number of Carbon Steel Tube that meet American ASTM or AISI standards. Common specifications for Carbon Steel Tube include A36,A106, A53/A53B, A178,A210,A252,A333, etc. Generally, we can support fast delivery within 3-5 days according to your requirements, and the delivery cycle of specially customized products is about 10 days. Contact us now to get a competitive price or a free sample.

Information

Features

Mild Carbon Steel Square Tubes, also known as low carbon steel tubes, are widely used in various industries due to their unique properties. Here are some of their key features:

  • Mild Steel Composition: Mild steel is a type of carbon steel with a low amount of carbon – generally 0.05–0.25% by weight, making it softer, more ductile, and more easily welded than high-carbon steels.
  • High Strength: Despite being softer than high carbon steels, mild carbon steel square tubes have high strength and toughness. They can withstand significant amounts of pressure and are resistant to breaking or cracking under load.

low-carbon-steel-square-tube-supplier-1

Mild Carbon Steel Square Tube Supplier

  • Weldability: Mild steel is known for its excellent weldability. This property makes these tubes easy to join and makes them a preferred choice for construction and manufacturing processes that require welding.
  • Machinability: The low carbon content of mild steel makes it easier to cut and shape than higher carbon steels, increasing its machinability.

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Mild Carbon Steel Square Tube Factory in China

  • Cost-Effective: Mild carbon steel square tubes are generally less expensive than high carbon or alloy steel tubes. They provide a balance of good physical properties and cost.
  • Versatility: These tubes can be used in a wide variety of applications, such as construction, automotive, furniture, and machinery parts, due to their strength and ease of fabrication.

low-carbon-steel-square-tube-factory-1

Mild Carbon Steel Square Tube Factory

  • Durability: Despite their lower carbon content, these tubes are durable and have a long service life, especially when properly maintained or treated to prevent corrosion.
  • Dimensional Accuracy: These tubes are typically manufactured with high dimensional accuracy, providing a precise fit for various applications.

low-carbon-steel-square-tube-supplier-2

China Mild Carbon Steel Square Tube

  • Recyclable: Like all steel products, mild carbon steel is recyclable, contributing to its cost-effectiveness and making it an environmentally friendly choice.
  • Square Shape: The square shape provides structural advantages such as equal strength in all directions. It also offers efficient use of space in storage and transport and is often used in applications where a flat side is beneficial.

china-low-carbon-steel-square-tube-1

Mild Carbon Steel Square Tube Stock in China

Specification

ShapeSquare Pipe
MaterialCarbon Steel
TechnologyWelded/Seamless
Producttion MethodHot Rolled/Cold Rolled
StandardA36,A53/A53B,A106,A178, A210, A252,A333,A500 etc.
Wall Thickness0.5MM~300MM(Customized on request)
Outer Diameter21.3MM~660MM(Customized on request)
Tolerance+/-1%
LengthSingle random length/Double random length
Surface1. Galvanized 2. PVC,Black and color painting 3. Transparent oil,anti-rust oil 4. According to clients requirement
PackingBundle, or with all kinds of colors PVC or as your requirements

Technology

Manufacturing mild carbon steel square tubes involves a series of steps that shape and form a flat strip of steel into a square tube. Below is a general overview of the process:

  1. Coil Preparation: The process starts with a coil of mild carbon steel strip. The coil is inspected and prepared for the tube forming process.
  2. Uncoiling and Leveling: The coil is then uncoiled and passed through a leveler, which straightens it and removes any distortions.
  3. Slitting: After leveling, the coil is slit to the appropriate width, depending on the size of the tube to be formed.
  4. Forming: The slit steel strip is then passed through a series of roll forming stands. As the strip moves through the stands, it is gradually shaped into a tube. For square tubes, the final stands will shape the tube into a square profile.
  5. Welding: Once the tube shape is formed, the edges are welded together to create a continuous seam. The welding method used often depends on the specific requirements of the tube, but Electric Resistance Welding (ERW) is commonly used.
  6. Cooling: After welding, the tube is cooled. This can be done using air or water, depending on the manufacturing setup.
  7. Sizing: Once the tube has cooled, it is passed through a series of sizing stands to ensure that it has the correct dimensions.
  8. Cutting: The tube is then cut to the desired length.
  9. Straightening: After cutting, the tubes are straightened if necessary to ensure they meet the required tolerances for straightness.
  10. End Finishing: The ends of the tubes can be treated as required, such as being deburred or chamfered.
  11. Inspection and Testing: The tubes are inspected and tested to ensure they meet all specifications and quality standards. This can include visual inspection, as well as non-destructive testing methods such as ultrasonic testing or eddy current testing.
  12. Coating: If necessary, the tubes can be coated for protection or aesthetic purposes.
  13. Bundling and Shipping: Finally, the tubes are bundled together and prepared for shipment to the customer.

Product Video

Application

Mild carbon steel square tubes are a popular choice for various applications due to their versatile characteristics. They are relatively easy to work with, have a good balance between strength and ductility, and are more affordable compared to other types of steel. Here are a few common uses:

  1. Construction and Structural Engineering: Mild steel square tubes are frequently used in the construction industry for structural support in buildings, bridges, and other structures. They can be used as framework materials due to their high strength-to-weight ratio.
  2. Automotive Industry: They are used in the manufacture of vehicle frames and other components due to their high impact resistance and durability.
  3. Furniture and Decor: Due to their aesthetic appeal and easy workability, mild steel square tubes are used in the manufacture of various types of furniture and decor items, including tables, chairs, bed frames, and shelving.
  4. Machinery and Equipment: Mild steel tubes are often used in the production of various types of machinery and equipment because of their ability to withstand mechanical stress.
  5. Fencing, Railings, and Gates: Mild steel square tubes are commonly used to build fences, railings, gates, and other similar structures because of their durability and strength.
  6. Industrial Applications: These tubes are used in industries such as oil and gas, power plants, and chemical plants for fluid conveyance and structural support.

Package

The packaging of carbon steel square tubes is similar to that of rectangular pipes. Here are the typical steps involved:

  • Bundling: The most common method for packaging is bundling, where multiple steel pipes are bound together using steel straps. Depending on the length and size of the pipes, the number in each bundle can vary.
  • Wrapping: After bundling, the steel pipes can be wrapped in a plastic or waterproof paper to protect against rust and other environmental damage. This is particularly important for carbon steel, which can corrode easily if not properly protected.

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  • Crating: For especially large or heavy pipes, or for long-distance shipping, wooden or steel crates can be used to provide additional protection. Crating can prevent damage during loading, unloading, and transportation.
  • End Protection: Caps can be placed on the ends of the pipes to protect them from damage and to prevent foreign objects from entering the pipe. This is especially important for threaded or beveled ends, which can be more susceptible to damage.

low-carbon-steel-square-tube-supplier-1

  • Marking: Each bundle or crate is typically marked with identifying information, such as the size, grade, heat number, manufacturer’s name or logo, and any other information required by the customer or by shipping regulations.
Metal in China®

Mild Carbon Steel Square Tube

Material
Carbon Steel
Shape
Square
Method
Cold Rolled
Alloy
Option
Certification
ASTM/AISI
Surface
Custom
Free Custom Size Service
Low Price Factory in Stock
Support Sample Order
3-5 Days Fast Delivery
Get Best Price
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Mild Carbon Steel Square Tube Supplier

Metal In China® is the only steel supplier in China for the Chinese government's subway infrastructure projects. We supply a large number of carbon steel pipes conforming to American ASTM or AISI standards, including seamless steel pipes and welded carbon steel pipes, which can be customized in size or technical parameters according to customer requirements.
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ASTM A53 Seamless Carbon Steel Pipe

Alloy
A53
Certification
ASTM
Method
Seamless
Surface
Custom
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ERW Welded Carbon Steel Pipe

Alloy
Option
Certification
Option
Method
Welded
Surface
Custom
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Spiral Welded Carbon Steel Pipe

Alloy
Option
Certification
Option
Method
spiral Welded
Surface
Custom
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LSAW Welded Carbon Steel Pipe

Alloy
Option
Certification
Option
Method
LSAW Welded
Surface
Custom
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API 5L SSAW Welded Carbon Steel Pipe

Alloy
Option
Certification
Option
Method
SSAW Welded
Surface
Custom
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Black Round Carbon Steel Welded Pipe

Alloy
Option
Certification
Option
Method
Welded
Surface
Custom
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Q235B SSAW Welded Carbon Steel Pipe

Alloy
Option
Certification
Option
Method
SSAW Welded
Surface
Custom
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Low Carbon Steel Round Tube

Alloy
Option
Certification
ASTM/AISI
Method
Cold Rolled
Surface
Custom
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A106 Carbon Steel Pipe

Alloy
A106
Certification
ASTM
Method
Cold Rolled
Surface
Custom
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A53/A53B Carbon Steel Pipe

Alloy
A53/A53B
Certification
ASTM
Method
Cold Rolled
Surface
Custom
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S195T Carbon Steel Pipe

Alloy
S195T
Certification
EN10255
Method
Cold Rolled
Surface
Custom
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High Carbon Steel Pipe

Alloy
Option
Certification
ASTM/AISI
Method
Cold Rolled
Surface
Custom
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