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large-diameter seamless steel pipe, seamless steel pipe, smls pipe, seamless pipe

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large-diameter seamless steel pipe, seamless steel pipe, smls pipe, seamless pipe
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Common Specifications of Large-diameter Seamless Steel Pipes

Date:2025-07-02View:255Tags:large-diameter seamless steel pipe, seamless steel pipe, smls pipe, seamless pipe

Large-diameter seamless steel pipe

Large-diameter seamless steel pipes refer to seamless steel pipes with an outer diameter of more than 159mm. Compared with other small-diameter steel pipes, large-diameter seamless steel pipes have higher strength and durability, and are suitable for occasions with high pressure and high temperature.


Specification table of large-diameter seamless steel pipes

The following table is a common specification table of large-diameter seamless steel pipes for reference:

Specification

 Outer diameter(mm)

 Wall thickness(mm)

219×36

 219

 36

219×48

 219

 48

273×36

 273

 36

273×48

 273

 48

325×36

 325

 36

325×48

 325

 48

377×36

 377

 36

377×48

 377

 48

426×36

 426

 36

426×48

 426

 48

529×20

 529

 20

529×24

 529

 24

630×20

 630

 20

630×24

 630

 24

720×20

 720

 20

720×24

720

24


Advantages of large-diameter seamless steel pipes

1. High strength

Due to the characteristics of the steel itself, large-diameter seamless steel pipes have higher strength and compressive resistance, and can withstand higher pressure and weight.


2. High temperature resistance

Large-diameter seamless steel pipes have good high temperature resistance and can maintain stable performance and strength even in high temperature environments.


3. Uniform wall thickness

Large-diameter seamless steel pipes adopt seamless manufacturing technology to ensure uniform wall thickness, and will not have defects such as gaps and cracks due to pipe joints or welding, thereby improving the safety of the entire pipeline.


4. Long service life

During the use process, large-diameter seamless steel pipes have good corrosion resistance and wear resistance, and their service life is very long.


Scope of application

Large-diameter seamless steel pipes are widely used in fields such as petroleum, chemical industry, natural gas, shipbuilding, nuclear power and high-pressure boilers. Because these fields require operation under high pressure and high temperature, large-diameter seamless steel pipes are widely used in these fields.


Summary

In short, understanding the specifications of large-diameter seamless steel pipes, their advantages and applicable scope is very helpful for choosing the seamless steel pipe size, caliber type, wall thickness, etc. suitable for your project.