Common carbon steel welded pipe models

Carbon steel welded pipe plays an important role in the industrial field and is widely used in multiple scenarios such as fluid transportation, structural support, and mechanical processing. To better choose the right carbon steel welded pipe, the following are common models classified according to different standards along with their application introductions.

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China Standard Carbon Steel Welded Pipe Models

China standard carbon steel welded pipes are designed and manufactured in accordance with national standards. The following are commonly used models and related information:

20# steel pipe
20# steel pipe has good comprehensive performance and processability. It is widely used in fluid transportation, structural applications, and mechanical processing.

45# steel pipe
45# steel pipe has high strength and is suitable for bearing large mechanical stress, making it ideal for manufacturing mechanical parts such as shafts and connecting rods.

Q235 steel pipe
Q235 steel pipe is cost-effective with good processing performance, suitable for low-pressure fluid transportation in general structures and mechanical engineering.

Q345 steel pipe
Q345 steel pipe offers high strength and good low-temperature impact toughness, making it suitable for high-pressure fluid transportation and general structural applications.

16Mn steel pipe
16Mn steel pipe has good low-temperature performance and corrosion resistance, making it ideal for low-temperature pressure vessels and pipelines.

10#-45# galvanized steel pipe
The galvanizing treatment enhances corrosion resistance, making it widely used in construction, petroleum, chemical, coal, machinery, light industry, food, aviation, and other industries.

American Standard Carbon Steel Welded Pipe Models

American standard carbon steel welded pipes are designed and manufactured according to American standards. The following are commonly used models and related information:

ASTM A106 (Grade A/B/C)
ASTM A106 has high strength and good high-temperature resistance, making it suitable for general-purpose pipes in high-temperature and high-pressure applications.

ASTM A53 (Grade A/B)
ASTM A53 is cost-effective, easy to process, and has good ductility and strength. It is a general-purpose seamless and electric welded steel pipe suitable for low-pressure fluid transportation.

ASTM A333 (Grade 1/6)
ASTM A333 has good low-temperature toughness, making it suitable for low-temperature pressure vessels and pipelines.

API 5L (Grade B/X42/X52/X60/X65/X70, etc.)
API 5L has high strength and is used for long-distance pipelines in the oil and gas industry.

Japanese Standard Carbon Steel Welded Pipe Models

Japanese standard carbon steel welded pipes are designed and manufactured according to Japanese standards. The following are commonly used models and related information:

JIS G3452
JIS G3452 has good processing performance and is cost-effective. It is a hot-rolled seamless steel pipe suitable for low-pressure water, steam, and oil transportation.

JIS G3454
JIS G3454 offers high strength and high-temperature resistance, making it ideal for high-temperature and high-pressure transportation.

JIS G3455
JIS G3455 has excellent high-temperature performance, making it suitable for transportation in high-temperature and high-pressure conditions.

JIS G3456
JIS G3456 has high strength and corrosion resistance, making it ideal for manufacturing high-temperature and high-pressure containers, gas pipelines, and oil pipelines.

Recommendations for Selecting Carbon Steel Welded Pipes

Different standards of carbon steel welded pipes have unique performance characteristics and applications. When selecting carbon steel welded pipes, consider the following factors:

Selection Based on Application Scenarios

For low-pressure fluid transportation, ASTM A53 Grade A or Q235 is recommended.

For high-pressure or high-temperature environments, ASTM A106 or 16Mn is suitable.

For low-temperature applications, ASTM A333 or 16Mn is preferred.

Consider Processing and Installation Requirements

For applications requiring extensive welding and forming, A53 Grade A with good ductility is recommended.

For high-strength requirements, Grade B or higher strength materials should be used.

Balancing Cost and Performance

For budget-sensitive projects, economical welded steel pipes (such as A53 F type) are a good choice.

For critical applications, seamless steel pipes (such as A106 or API 5L) offer better reliability.

Environmental Adaptability

In corrosive environments, galvanized or coated carbon steel welded pipes are recommended.

Summary

For different applications and requirements, various carbon steel welded pipe models offer unique advantages. Therefore, selecting the appropriate carbon steel welded pipe should be based on actual conditions and specific project needs.