Steel Pipe: Carbon Steel and Black Steel

Learn about STEEL PIPE-And 4 differences between carbon and black steel:

STEEL PIPE manufacturers develop steel plate twisted to form a round structure or they might be ceaselessly created from a curl of steel strip adapted to a winding and butt-welded along the twisting seam.

Black steel and carbon steel are types of steel. The important feature which made them different is their susceptibility to corrosion. Carbon steel requires the process of galvanization to make it corrosion-free. Whereas black steel is the product of non-galvanized steel.

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History of STEEL PIPE:

William Murdoch is the pioneer of STEEL PIPE. In 1815, William joined barrels and muskets to support the system of the coal-burning lamp. William invented the method of transporting coal gas to light up the lamps on the streets of London.


Since the 1800s, extraordinary steps have been made in the innovation of STEEL PIPE, including improving assembling strategies, creating applications for their utilization, and the foundation of guidelines and principles that oversee their accreditation.

The manufacturing process of STEEL PIPE:

The overall production process of STEEL PIPE includes these steps. From the melting of raw steel to molding and welding a STEEL PIPE form:

  • Raw material chemical and physical tests are done.
  • Steel melts using melting iron or coke in a hot furnace. After that the molten steel transfers into iron molds where it cools off and forms ingots.
  • To make a flat surface ingots passes through large rollers and bear enormous pressure.
  • Ingot passes through two high mills to produce a bloom. therefore this action causes the steel to be stretched and squeezed into thinner pieces.
  • Blooms require the further process to transform into billets. Blooms again visit rolling devices to become more narrow and long. Flying shears then cuts blooms into pieces .billets are ready to convert into seamless pipes.
  • After the completion of the stretching process then comes the pickling process. Steel passes through tanks of sulfuric acid to clean metal. Then it is washed with hot and cold water and dried.
  • Square billets are used to make seamless pipes. Billets bear heat treatment and then shape a cylindrical frame, additionally called around. The round is then placed in a heater where it is warmed white-hot. The heated round is then moved with extraordinary weight. This high weight moving makes the billet loosen up and an opening to a hole in the middle.
  • Completion of this process leads to putting the pipe into the straightening machine. To fit two or more pipes together joints connect them.

But what are carbon steel and black steel? Scroll down immediately and learn about everything you need to know.

Carbon steel:

Carbon steel is different from other types of steel due to the presence of a high percentage of carbon in it. For instance, many types of steel contain as low as 0.0.5-0.3% carbon content.

However, carbon steel contains up to 2.5% of carbon traces. The STEEL PIPE made from carbon steel is widely used in railways, bridges, vehicles, buildings, and also in marine development.

Type of carbon steel:

The three major types of carbon steel are:

Low carbon content steel:

Low carbon steel has 0.04–0.3% carbon content and is the most widely recognized form of carbon steel. Mild steel is additionally viewed as low carbon steel as it is characterized as having a low carbon substance of 0.05–0.25%. Low carbon content steel is malleable, profoundly formable, and can be utilized for car body parts, plates, and wire items.

Medium carbon content steel:

Medium carbon steel has a carbon percentage of 0.31–0.6% and a manganese concentration of 0.6–1.65%. Moreover, heat treatment and quenching enhance mechanical properties. Famous applications incorporate shafts, axles, pinion wheels, rails, and railroad wheels.

High carbon content steel:

High carbon steel has a carbon quantity of 0.6–1% with a 0.3–0.9% manganese content. Furthermore, the Properties of high carbon make them reasonable for use as springs and high-strength wires.

Advantages of carbon steel:

  • Carbon steel has a high strength that makes it more efficient than any other type of steel.
  • The high carbon percentage of carbon steel increases strength. The strength becomes the reason for using carbon STEEL PIPE during construction.
  • Previously Japanese used to make a sword out of high carbon steel known as Tamahagane steel 100 years ago.

Disadvantages of carbon steel:

  • Just as carbon steel is so strong. It becomes the reason for its limited usage as it is so difficult to work with.
  • Carbon steel is more susceptible to corrosion. Because of the addition of chromium in steel about 10-12% it becomes stainless. However, carbon steel does not contain chromium which becomes the reason for rusting when exposed to moisture for a longer period.

Black steel:

The uncoated type of steel is known as black steel. Moreover, the formation of iron-oxide is the reason for the dark color.

Black STEEL PIPE uses for underground or lowered applications and for essential steam lines and Pipelines that go through acids. This type of STEEL PIPE requires less maintenance.

Properties of black steel:


Black steel is tough. Therefore black STEEL PIPE protects from the formation of cracks.


Black steel can be installed easily. Just as black STEEL PIPE is mostly field fabricated and is easy to work with.

Corrosion prevention:

Black steel has greater corrosion resistance.  Therefore Black STEEL PIPE can be easily used in the areas that are critical to rusting and corrosion.

Carbon steel vs black steel:

After the details about carbon steel and black steel drag the cursor below and find out about the difference between carbon and black steel .carbon vs black steel with respect to :

In terms of coating:

Carbon steel is galvanized. Carbon steel coated with zinc has higher corrosion resistance. Whereas black steel is not made up of galvanized steel.

Similarly, black STEEL PIPE is used to carry gas because it is more prone to erosion. Whereas carbon STEEL PIPE is chosen to transport water. However black STEEL PIPE can prevent fire more than carbon STEEL PIPE which is why it is often used in fire hose systems.

In terms of cost:

Due to the fact, carbon steel is coated with zinc it is more expensive than black steel. Due to no galvanization black STEEL PIPE is a much more cost-effective and low maintenance choice.

In terms of carbon content:

Carbon steel contains a carbon content of as much as 2.1%. However black steel has no carbon content but consists of iron oxide coating on the surface.

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In terms of toughness:

The amount of carbon content judges the hardness and toughness property of carbon steel. On the other hand, black steel has good strength.