Carbon Steel Pipe VS Black Steel Pipe

Currently, carbon steel pipe and black steel pipe are both widely used in various industries. Currently, carbon steel pipe and black steel pipe are both widely used in various industries. However, what distinguishes these two types of pipes? Currently, carbon steel pipe and black steel pipe are both widely used in various industries. This article aims to explore their differences.

Carbon Steel Pipe VS Black Steel Pipe：

 1. Definition

Black steel pipe is made of uncoated steel, and its dark colour comes from iron oxides that form on its surface during the manufacturing process. During forging, a black oxide scale forms on the surface of the steel pipe, giving it the characteristic finish of this type of pipe.

Carbon steel pipe is the most commonly used type of steel pipe. It is created by perforating steel ingots or solid round steel to create a capillary tube, which is then hot rolled, cold rolled, or cold drawn. The three main types of carbon steel pipe are seamless steel pipe, straight seam steel pipe, and spiral steel pipe.

2. Material Composition

Carbon steel pipe and black steel pipe are both composed of iron and carbon. However, carbon steel pipe contains less carbon, making it harder and more brittle. Despite this, it is easier to weld, process and form.

3. Manufacturing Process

Carbon steel pipe is produced by heating iron ore to high temperatures (approximately 2100°F) and adding carbon to form a liquid slag. The slag is then cooled and formed into cakes, which are rolled into tubes. Similarly, black steel pipe is produced, but the main difference is that the iron ore is not heated as hot (about 1700°F) and does not require the addition of carbon.

4. Characteristics

Carbon steel pipe is harder and more brittle than black steel pipe. However, it is easier to weld, process and form. Although carbon steel piping is susceptible to corrosion, which can weaken the material over time.

5. Applications

Carbon steel pipe is frequently used in structural applications, such as buildings and bridges. Black steel pipe is typically manufactured seamlessly, making it a common choice for transporting fluids like water, natural gas, and oil.