Understand the selection and application of common carbon steel pipe specifications

As an important part of the steel industry, carbon steel pipes are widely used in construction, energy, petrochemicals, transportation and other fields. Understanding the specifications of carbon steel pipes is crucial for the correct selection and use of pipes.

First, common carbon steel pipe specifications

1. Outer diameter and wall thickness: The specifications of carbon steel pipes are usually expressed by two parameters: outer diameter and wall thickness. The outer diameter refers to the diameter of the pipe, and the wall thickness refers to the thickness of the pipe wall. Common carbon steel pipe outer diameter specifications include 1/2 inch, 3/4 inch, 1 inch, 2 inches, etc., and the wall thickness specifications include SCH 10, SCH 40, SCH 80, etc. The choice of these specifications depends on the specific engineering requirements and application scenarios.

2. Pipeline length: The length of carbon steel pipes generally has two types: fixed length and random length. Fixed length pipes are usually 6 meters or 12 meters, which are suitable for occasions where they need to be installed according to standard lengths, such as construction projects. Random length pipes can be customized according to actual needs, suitable for special occasions and non-standard size requirements.

3. Pipe material: The material of carbon steel pipes can be selected according to different requirements. Common materials include low carbon steel, medium carbon steel and high carbon steel. Low carbon steel has good weldability and machinability, and is suitable for general low-pressure transmission systems; medium carbon steel has high strength and wear resistance, and is suitable for transmission systems under medium pressure and temperature conditions; high carbon steel has higher strength and hardness, and is suitable for high temperature and high pressure working environments.

Second, the scope of application of carbon steel pipe specifications

1. Construction field: Carbon steel pipes are widely used in water supply and drainage systems, HVAC systems, fire protection systems, etc. in the construction field. In these applications, the common pipe specifications are small-diameter pipes of 2 inches and below. Because carbon steel pipes have good plasticity and weldability, easy installation and low cost, they have been widely used in construction.

2. Energy field: Carbon steel pipes are mainly used in the energy field to transport media such as oil, gas, steam and water. Since energy transportation has high pressure and temperature requirements for pipelines, the common pipeline specifications are large-diameter pipes of 3 inches and above. In addition, carbon steel pipes have good corrosion resistance and are suitable for harsh working environments.

3. Petrochemical industry: Carbon steel pipelines play an important role in the petrochemical industry, used to transport oil, chemical raw materials and finished products. The petrochemical industry has high requirements for the pressure resistance and corrosion resistance of pipelines, so common pipeline specifications are high-thickness pipelines, such as SCH 80 and SCH 160. In addition, carbon steel pipelines can also be treated with anti-corrosion to improve their corrosion resistance to adapt to harsh working environments.

Third, factors to consider when choosing appropriate carbon steel pipeline specifications

1. Working pressure and temperature: It is very important to choose the appropriate carbon steel pipeline specifications according to the pressure and temperature requirements of the project. Higher pressure and temperature require the selection of thick-walled pipelines to ensure the safety performance of the pipeline. At the same time, the appropriate pipeline material should be selected according to the working pressure and temperature to ensure the pressure resistance and corrosion resistance of the pipeline.

2. Conveying medium: Different media have different requirements for pipelines. For example, pipelines that convey corrosive media need to select materials with better corrosion resistance and corresponding anti-corrosion measures. At the same time, some special media may have additional requirements for pipeline materials and specifications, which need to be selected according to actual conditions.

3. Economy and feasibility: When selecting carbon steel pipeline specifications, economy and feasibility also need to be considered. Reasonable selection of pipeline specifications can reduce project costs and improve project benefits. Therefore, it is necessary to comprehensively consider factors such as pipeline materials, specifications and project budgets to make the best choice.

In summary, the specification selection of carbon steel pipelines involves considerations such as outer diameter, wall thickness, length and material. Reasonable selection of carbon steel pipeline specifications is of great significance to ensure the safety, reliability and economy of the project. In practical applications, it is necessary to select appropriate carbon steel pipeline specifications based on specific project needs and medium requirements, combined with project budget and feasibility, to meet the needs of the project and ensure the normal operation of the pipeline system.