Material Grade of Carbon Steel Pipe

Standard of carbon steel pipe material

Carbon steel pipe is a commonly used metal material, widely used in petrochemical, power, construction, manufacturing and other fields. Therefore, the standard of carbon steel pipe is of great significance. The following are the relevant standards of carbon steel pipe material:

1. International standards

The international standards for steel pipes include ISO, ASTM, DIN, etc., among which the most commonly used is ISO standard. ISO standard specifies the specific requirements for the size, shape, quality, etc. of seamless and welded carbon steel pipes, alloy seamless steel pipes, alloy welded steel pipes, etc. These standards play an important role in international trade and technical exchanges.

2. American standards

American steel pipe standards include ASTM and API. ASTM standards refer to a series of steel standards that provide various types and grades of steel pipe materials. API standards are mainly for steel pipes used in the oil and gas industry, including API 5L, API 5CT, etc., for applications such as drill pipes and casing pipe.

3. Chinese standards

China's national standards integrate international and Chinese standards to refine a series of specific standardized specifications. China's pipe standards mainly include GB/T, JB/T, SY/T, DL/T, etc. Among them, GB/T standard is the most widely used, covering the steel standards of various industries.

Grades of carbon steel pipe materials

Carbon steel has different properties under different temperatures and pressures, so the grades of steel pipes are divided according to the mechanical properties and chemical composition of the materials. There are three main standards for the classification of carbon steel pipe materials: the United States, Europe and China. Among them, the United States adopts the ASTM standard, Europe adopts the EN standard, and China adopts the GB/T standard. The following is the classification of grades of their respective standards:

1. Classification of carbon steel materials according to ASTM standards

ASTM standards divide carbon steel material grades into four grades: A, B, C, and D. Among them, the higher the grade, the better the strength and corrosion resistance of the material. Some ASTM grades of mild steel pipes are widely used in fluid transportation, equipment structures and hydraulic systems.

2. EN standard carbon steel material grade classification

EN standard divides carbon steel material grades into six grades: P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, and P265TR2. Among them, the higher the grade, the better the strength and corrosion resistance of the material.

3. GB/T standard carbon steel material grade classification

GB/T standard divides carbon steel material grades into 10 grades, namely: Q195, Q215A, Q215B, Q235A, Q235B, Q235C, Q235D, Q275, Q345, and L245. Among them, the higher the grade, the better the strength and corrosion resistance of the material.

The role of carbon steel pipe material grade

The grade of carbon steel pipe material determines the environment and liquid (gas) medium it can be used for. For specific environments and liquid (gas) media, the appropriate carbon steel pipe material grade must be selected. At the same time, the grade of carbon steel pipe material also determines the load-bearing capacity and service life of the pipeline.

Carbon steel pipe material specification parameter table

The following is a table of carbon steel pipe material specifications parameters, which summarizes the commonly used carbon steel pipe material grades and their corresponding specifications parameters.

Summary

The above is the basic knowledge of carbon steel pipe material grades and the introduction of related specifications parameters. I hope it can be helpful to those who use carbon steel pipes. When selecting carbon steel pipe materials, it is necessary to select the appropriate pipeline material grade according to the actual application environment and liquid (gas) medium.