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 Black Carbon Steel Square Pipe 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

Black carbon steel square pipes have several distinctive features that make them suitable for a wide range of applications. They are essentially carbon steel pipes that have been coated in a black varnish or lacquer to improve durability and resist corrosion. Here are some of their features:

  • High Strength: Like all carbon steel pipes, black carbon steel square pipes are known for their high strength. They can withstand significant amounts of pressure and heavy loads, making them ideal for structural applications.
  • Durability: The black coating on these pipes improves their durability by providing an extra layer of protection against wear, tear, and corrosion.

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Black Carbon Steel Square Pipe Supplier

  • Ease of Installation: These pipes are known for their weldability, which makes them relatively easy to install. The square shape also provides uniform strength in all directions, simplifying installation and use in structural applications.
  • Aesthetic Appeal: The black finish gives these pipes a sleek and professional look, which can be an important consideration in certain architectural or design applications.

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Black Carbon Steel Square Pipe Factory in China

  • Versatility: Black carbon steel square pipes can be used in a wide range of applications, from plumbing and heating systems to construction and industrial applications.
  • Resistant to Rust: While not completely rust-proof, the black coating on these pipes provides an additional layer of resistance against rust and corrosion.

china-black-carbon-steel-square-pipe-1

Black Carbon Steel Square Pipe Factory

  • Environmentally Friendly: Carbon steel can be recycled, making these pipes a more eco-friendly option compared to some other materials.
  • Dimensional Accuracy: The manufacturing process of these pipes ensures high dimensional accuracy, improving the quality and speed of assembly or construction projects.

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China Black Carbon Steel Square Pipe

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Black Carbon Steel Square Pipe 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

The manufacturing process of black carbon steel square pipes involves several steps. While specific procedures can vary between different manufacturers and product lines, the following is a general overview of this process:

  1. Coil Preparation: The process begins with a flat sheet of steel, known as a coil. The coil is inspected and prepared for processing.
  2. Uncoiling and Leveling: The coil is then uncoiled and run through a leveler to straighten it and remove any distortions.
  3. Shearing: After leveling, the coil’s edges are sheared to ensure a straight edge.
  4. Forming: The leveled coil is then passed through a series of roll-forming stands that progressively bend the flat sheet into a square-shaped tube. This cold forming process is highly precise to ensure the correct dimensions and uniformity.
  5. Welding: The edges of the formed tube are brought together and welded to create a continuous pipe. This welding process, typically Electric Resistance Welding (ERW), uses electric currents to generate heat and form a strong weld seam along the pipe’s length.
  6. Cooling and Sizing: After welding, the pipe is cooled and then sized by passing it through a series of rolls that ensure the final dimensions meet the specified tolerances.
  7. Cutting: Once cooled and sized, the pipes are cut to the desired length.
  8. End Finishing: The ends of the pipes are then finished, which can include threading, facing, or bevelling, depending on the pipe’s intended use.
  9. Inspection: Each pipe is carefully inspected for quality. This may include visual inspection, as well as non-destructive testing methods such as ultrasonic testing or radiographic testing to detect any internal flaws.
  10. Coating: After inspection, the pipes undergo a coating process. For black carbon steel square pipes, a layer of black varnish or a similar coating is applied to enhance corrosion resistance and improve aesthetics.
  11. Packing and Shipping: Finally, the pipes are bundled, packed, and prepared for shipping to their various destinations.

Product Video

Application

Black carbon steel square pipes, also known as black steel pipes, are versatile and can be used in various applications, including:

  1. Construction and Infrastructure: Black carbon steel square pipes are often used in construction due to their high strength and durability. They are commonly used in buildings, bridges, scaffoldings, and other structural applications.
  2. Industrial Use: In industries like oil and gas, power generation, and manufacturing, these pipes can be used to transport fluids and gases, or even serve as conduits for electrical wiring.
  3. Automotive Industry: Black carbon steel square pipes are used in the automotive industry to manufacture various components and parts of vehicles due to their resistance to stress and heat.
  4. Furniture and Home Decor: The aesthetic appeal of black steel pipes makes them popular in furniture design and home decor. They can be used to create industrial-style furniture, handrails, and decorative pieces.
  5. Fencing, Railings, and Gates: Their shape and strength make them ideal for use in constructing fences, railings, and gates.
  6. Plumbing: In some scenarios, they can be used for certain plumbing applications, although they are susceptible to corrosion over time.

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.

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  • 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®

Black Carbon Steel Square Pipe

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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Black Carbon Steel Square Pipe 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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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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