Seamless carbon steel pipe is a common steel pipe material, mainly used for pipelines in the fields of petroleum, chemical industry, electricity, metallurgy, etc. They have the advantages of high temperature resistance, corrosion resistance, and pressure resistance, so they are widely used.
Common seamless carbon steel pipe model classification
Model |
Thickness (mm) |
Diameter (mm) |
Application |
10# |
2-25 |
6-426 |
General |
20# |
2-30 |
6-426 |
General |
35# |
3-36 |
6-426 |
High pressure, ultra-high pressure |
45# |
3.5-50 |
6-426 |
Mechanical structure, automobile manufacturing |
Q345B |
2.5-50 |
6-426 |
Building structure, bridge structure |
20G |
2-12 |
6-426 |
Boiler, petrochemical, power |
16Mn |
1-14 |
6-426 |
Oil, natural gas, shipbuilding |
Related materials of models
1. Carbon structural steel
Including 10#, 20# and 35#, 45#. 10# and 20# are low-carbon steels with good plasticity and toughness, and are mainly used for fluid delivery pipelines; 35# and 45# are medium-carbon steels with high strength and hardness, and are often used to manufacture mechanical parts and structural parts.
2. Low-alloy steel
Such as 16Mn, a small amount of alloy elements are added to carbon structural steel to improve mechanical properties and corrosion resistance, and are widely used in high-pressure containers, boilers, pipelines and other fields.
Application fields of various types of seamless carbon steel pipes
1. 10#, 20# seamless pipe
Commonly used in pipelines in the oil, natural gas and other industries, and can also be used as structural pipes in the field of mechanical manufacturing.
2. 35# seamless pipe
Suitable for high-pressure and ultra-high-pressure fields, such as high-pressure boilers, high-pressure oil pipes, etc.
3. 45# seamless pipe
Mainly used for structural pipes in mechanical structures, automobile manufacturing, skeletons, machine tools and other fields.
4. Q345B seamless pipe
Mainly used in building structures, bridge structures and other fields, and is often used in high-rise buildings, bridges, transportation equipment and other aspects.
5. 20G seamless pipe
Suitable for conveying media in boilers, petrochemicals, electric power and other fields, often used in high temperature and high pressure occasions.
6. 16Mn seamless pipe
Used for conveying medium pipelines in industries such as oil, natural gas, and ships, as well as in the field of mechanical structures.
Summary
Common models of seamless carbon steel pipes include 10#, 20#, 35#, 45#, Q345B, 20G and 16Mn. These models have their own characteristics and application fields according to different materials, uses and manufacturing processes. Due to its excellent performance and wide application fields, it plays an important role in industries such as petroleum, chemical industry, electric power, and metallurgy.