Pipes
Pipes
Pipes are cylindrical products with a round cross-section and a uniform structure along their length, used in various industrial applications. The types of pipes vary according to production methods and application areas. Detailed information about the two main types of pipes—drawn pipes and welded pipes—is provided below.
Drawn Pipes
Drawn pipes are produced through the drawing process of metal. These pipes are typically used in applications requiring high strength, precise tolerances, and smooth surface quality.
What Are Drawn Pipes?
Drawn pipes are produced by pulling a flat metal sheet or rod through a die to achieve the desired diameter and length. During this process, the metal is passed through a mold and drawn into a pipe shape.
Where Are Drawn Pipes Used?
- Automotive Industry: Used in motor parts, chassis elements, exhaust systems, etc.
- Machinery and Equipment: Production of various machine parts and equipment.
- Hydraulic and Pneumatic Systems: Production of hydraulic and pneumatic cylinders and connection elements.
- Construction and Infrastructure: Structural elements, piping systems, and transportation systems.
Types of Steel for Drawn Pipes
| Steel Code | Description |
|---|---|
| ST37-2 | General structural steel used in low carbon pipe production. |
| ST52-3 | Suitable for applications requiring high strength and durability. |
| S355J2H | Used in applications requiring high strength and low-temperature resistance. |
Welded Pipes
Welded pipes are created by shaping a metal sheet into a cylindrical form and then welding the edges. They are generally used for larger diameter and thicker-walled pipes.
What Are Welded Pipes?
Welded pipes are produced by first forming flat metal sheets into a cylindrical shape and then welding the edges together. These pipes are preferred for larger diameter and thicker-walled applications.
Where Are Welded Pipes Used?
- Oil and Gas Industry: Used in oil and gas transportation pipelines.
- Construction and Infrastructure: Water transmission systems, sewer lines, and structural pipes.
- Energy Production: Used in thermal power plants and other energy production facilities.
- Industrial Applications: Used in various industrial transportation and storage systems.
Types of Steel for Welded Pipes
| Steel Code | Description |
|---|---|
| API 5L X42-X70 | Standard steel types used in oil and gas pipelines. |
| ASTM A53 | A steel type preferred for general structural and transportation pipes. |
| ASTM A106 | Steel pipes used for high-temperature and high-pressure conditions. |
Differences Between Drawn Pipes and Welded Pipes
| Feature | Drawn Pipes | Welded Pipes |
|---|---|---|
| Production Method | Shaped by drawing metal through a die | Shaped by welding edges of metal sheets |
| Diameter and Length | Generally thinner-walled and smaller diameter | Generally thicker-walled and larger diameter |
| Application Areas | Applications requiring precise tolerances | Large diameter pipelines and industrial applications |
| Surface Quality | High surface quality and smoothness | Surface quality is generally not as high as drawn pipes |
| Strength | High strength and durability | Generally high strength due to thicker walls |
Summary
Drawn Pipes:
- What Are They? Pipes produced through the drawing process, offering high precision and surface quality.
- Where Are They Used? Automotive, machinery, hydraulic/pneumatic systems, and construction applications.
Welded Pipes:
- What Are They? Pipes produced by welding metal sheets into a cylindrical form, suitable for larger diameters and thicker walls.
- Where Are They Used? Oil/gas transportation, water transmission, energy production, and industrial applications.
These pipe types cater to different industrial needs based on their production methods and application areas.
