Black steel pipes are non-galvanized steel pipes. Black steel pipe, named for the scaly, dark iron oxide coating on its surface. It is used in applications that do not require galvanized steel.
After applying a small amount of fitting compound to the threads, they are threaded onto the threaded pipe. Larger diameter pipes are welded, not threaded. Black steel pipe is cut with a heavy duty pipe cutter, chop saw or hacksaw. You can also get mild steel ERW black piping, widely used for gas distribution inside and outside the home, and for hot water circulation in boiler systems. Can also be used for drinking water or drain or exhaust pipes. Browse through our Construction Pipe and Tube Catalog to find a supplier that meets your needs. Black steel pipe is used for applications that do not require galvanizing the pipe. This non-galvanized black steel pipe is named for its dark iron oxide coating on its surface. Because of the strength of black steel pipe, it is used to deliver natural gas and water to rural areas, as well as to protect electrical wires and conduits for the delivery of high-pressure steam and air. The oilfield industry also uses black pipelines to transport large quantities of oil to remote areas.

Black steel pipes and tubes can be cut and threaded to suit your project. Fittings for this type of pipe are black malleable (soft) cast iron. After applying a small amount of fitting compound to the threads, they are threaded onto the threaded pipe. Larger diameter pipes are welded, not threaded. Black steel pipe is cut with a heavy duty pipe cutter, chop saw or hacksaw. You can also get  mild steel ERW  black piping, widely used for gas distribution inside and outside the home, and for hot water circulation in boiler systems. Can also be used for drinking water or drain or exhaust pipes. Browse our construction tubing catalog to find a supplier that meets your needs.

The development of black steel pipes

Whitehouse’s method was refined by John Moon in 1911. His technology enables manufacturers to create a continuous flow of pipes. He used his technology to build machines and many manufacturing plants adopted it. Then came the need for seamless metal pipes. Seamless tubes were originally formed by drilling holes in the center of a cylinder. However, it is difficult to drill with the precision required to ensure wall thickness uniformity. An 1888 improvement increased efficiency by casting billets around fire-resistant brick cores. After cooling, remove the brick, leaving a hole in the middle.

Application of black steel pipe

The strength of black steel pipe makes it ideal for conveying water and natural gas in rural and urban areas, as well as protecting electrical wiring and conduits carrying high-pressure steam and air. Black steel pipes are used by the oil and petroleum industry to transport large quantities of oil to remote areas. This is beneficial because the black steel pipe requires little maintenance. Other uses for black steel pipes include gas distribution inside and outside the home, wells and sewage systems. Black steel pipes are never used to transport drinking water.

Modern craftsmanship of black steel pipes

Advances in science have greatly improved the butt-welded pipe-making method invented by Whitehouse. His technique is still the primary method of making pipes, but modern manufacturing equipment that can generate extremely high temperatures and pressures makes pipe manufacturing much more efficient. Depending on their diameter, some processes can produce welded pipe at an astonishing rate of 1,100 feet per minute. With the huge increase in the production rate of steel pipes, the quality of the final product has also improved.

Quality Control of Black Steel Pipe

The development of modern manufacturing equipment and the invention of electronic products have resulted in significant improvements in efficiency and quality control. Modern manufacturers use special X-ray gauges to ensure uniformity of wall thickness. The strength of the tube is tested with a machine that fills the tube with water under high pressure to ensure the tube is held in place. Failed pipes will be scrapped.

What is the difference between black steel pipe and galvanized steel pipe

Galvanized steel

The main use of galvanized pipe is to transport water to homes and commercial buildings. Zinc also prevents the buildup of mineral deposits that can clog water pipes. Galvanized pipes are often used as scaffolding frames because of their corrosion resistance.

black steel pipe

Black steel pipe is different from galvanized pipe because it has no coating. The dark color comes from iron oxide that forms on its surface during the manufacturing process. The main use of black steel pipes is to transport propane or natural gas to residential and commercial buildings. The pipe is manufactured without seams, making it a better conduit for transporting gases. Black steel pipe is also used in fire sprinkler systems because it is more fire resistant than galvanized pipe.

Introduction to Differences

• Both black and galvanized pipes are made of steel.
• Galvanized pipes have a zinc coating, while black pipes do not
• Because it is easy to corrode, black pipes are more suitable for conveying gas. On the other hand, galvanized pipes are best for carrying water, but not luck
• Galvanized pipes are more expensive because they have a zinc coating
• Galvanized pipe is more durable

Water and gas need to be piped to residential and commercial buildings. Natural gas powers stoves, water heaters and other appliances, while water is essential for other human needs. The two most common types of pipes used to transport water and gas are black steel pipes and galvanized steel pipes.

Problem
The zinc on galvanized pipes can flake off over time, clogging the pipes. Spalling can cause the pipe to burst. The use of galvanized pipes to transport gas can be dangerous. On the other hand, black steel pipes corrode more easily than galvanized pipes and allow minerals from the water to build up in them.

Cost
Galvanized steel pipes cost more than black steel pipes because producing galvanized pipes involves galvanizing and manufacturing processes. Galvanized fittings also cost more than those used on black steel. Galvanized steel pipes must not be connected to black steel pipes during the construction of residential or commercial buildings.

What is the difference between astm a53 and astm a106 ?
The difference between ASTM A53 pipe and A106 pipe in terms of specification range, pipe chemical composition, mechanical properties (tensile and yield strength, etc.), pipe type.

scope

• ASTM A53 is a standard specification for pipe, steel, black and hot dipped, galvanized, welded, and seamless.
• ASTM A106 is the standard specification for seamless carbon steel pipe for high temperature service.

Application Type A 53 钢管
can be either welded or seamless, depending on how it was purchased. It is a general steel pipe specification, including galvanized pipe and black pipe.
A106 is a chemically similar pipe but for high temperature service (up to 750 degrees Fahrenheit). It is a seamless tube.
In the US at least, welded pipe usually has A53, while A106 is seamless. If you ask for A53 in the US, they will cite A106 as an alternative.
Chemical Composition
For example, when we compare A106-B and A53-B seamless from a chemical composition perspective, we find:

• 1. A106-B contains silicon, minimum. 0.10%, of which A53-B is 0%, silicon is an important element to improve the heat resistance standard.
• 2. A106-B contains manganese 0.29-1.06%, of which A53-B is 1.2%.
• 3. A106-B contains low sulfur and phosphorus, max. 0.035%, of which A53-B contains 0.05 and 0.045%, respectively.

A53 Tube vs A106 Tube – (4) Mechanical Properties

Other differences between A53 pipe and A106 pipe
Because they have different ranges and specify different types of steel pipes, the manufacturing process and required quality control tests and inspections will be different from each other. If you have a specific opinion, please leave a comment.