Recommended Carbon Steel Pipes for Chemical Plants

Chemical plants need to transport various fluids and gases during the production process, including high temperature, high pressure, corrosive substances, etc. In order to ensure the safety and stability of the transportation process, it is crucial to choose the right pipe material. Among them, the carbon steel pipe is widely used due to their high strength and corrosion resistance.

Characteristics and application scope of carbon steel pipes

Carbon steel pipes are industrial pipes made of carbon steel as the main raw material. According to the carbon content, carbon steel pipes can be divided into three categories: mild steel pipe, medium carbon steel pipe and high carbon steel pipe. The following are its main characteristics:

1. High strength

Carbon steel pipes have high strength and can withstand greater pressure and tensile force to ensure the safety and stability of the transportation process.

2. Corrosion resistance

The corrosion resistance of carbon steel pipes enables them to adapt to the complex chemical environment in chemical plants and reduce the risk of leakage caused by corrosion.

3. Strong adaptability

Carbon steel pipes can be used to transport various fluids and gases, including high temperature and high pressure gases and liquids such as coal gas, oil, and steam, as well as corrosive substances such as acids, alkalis, and salts.

4. Good ductility

Carbon steel pipes are easy to deform during processing and can meet the needs of pipeline connections of different shapes and requirements.

Types of chemical carbon steel pipes

1. Seamless carbon steel pipes

Seamless carbon steel pipes are pipes made of a whole piece of steel. They have high strength and corrosion resistance and are often used to transport high-temperature and high-pressure fluids and gases, such as heat exchangers, reactors, steam pipes, etc. in chemical production.

2. Welded carbon steel pipes

Welded carbon steel pipes are mainly welded together by welding different carbon steel plates. They have good formability and weldability and are often used to transport low-pressure fluids and gases, such as water supply pipes, air ducts, drainage pipes, etc.

3. Spiral steel pipes

Spiral steel pipes are steel pipes made by spiral curling forming process. They have high strength and load-bearing capacity and are suitable for transporting large-diameter low-pressure fluids and gases, such as urban sewage pipes, oil pipelines, etc.

Recommended materials for carbon steel pipes in chemical plants

1. Q235 carbon structural steel

Q235 carbon structural steel is a commonly used carbon steel material that can meet the requirements of most chemical pipelines. It has good plasticity and machinability and is easy to manufacture and install.

2. 20# carbon structural steel

20# carbon structural steel has high tensile strength and wear resistance, and is suitable for some high-demand occasions, such as high-pressure pipelines and chemical equipment.

3. 16Mn carbon structural steel

16Mn carbon structural steel has good low-temperature toughness and corrosion resistance, and is suitable for chemical pipelines and equipment in low-temperature and high-corrosion environments.

Application of chemical carbon steel pipes

Chemical carbon steel pipes are widely used in pipelines and equipment in the chemical, petroleum, natural gas, pharmaceutical and other industries.

Advantages and disadvantages of chemical carbon steel pipes

1. Advantages

High strength and good corrosion resistance.

Low manufacturing and processing costs.

Can adapt to different working environments and working pressures.

2. Disadvantages

Special requirements for high temperature and high pressure or low temperature and low pressure cannot be met.

There are certain limitations in the welding process.

There are restrictions for some highly corrosive media.

How to choose the right carbon steel pipe material

When choosing the carbon steel pipe material for a chemical plant, the following factors should be considered:

1. Conveying medium

Choose the right carbon steel pipe material according to the pH, temperature, pressure and other factors of the conveying medium. For example, for highly corrosive media, a material with better corrosion resistance should be selected.

2. Environmental conditions

Consider the process conditions, ambient temperature, oxygen content and other factors of the chemical plant. In an environment with high temperature, high pressure or high oxygen content, a carbon steel pipe material that can withstand these conditions should be selected.