Description
DIN 2609 Grade ST 35-8 Seamless Tube
Overview
DIN 2609 Grade ST 35-8 Seamless Tubes are high-quality carbon steel tubes designed for high-pressure applications. Manufactured according to the DIN 2609 standard, these tubes are known for their excellent mechanical properties and high resistance to pressure and temperature. Their seamless design makes them particularly reliable for use in various industrial applications, including boilers and pressure vessels.
Table of Contents
- Introduction
- Specifications and Dimensions
- Mechanical Properties
- Material Composition
- Manufacturing Process
- Applications
- Grades and Equivalents
- Conclusion
1. Introduction
DIN 2609 Grade ST 35-8 Seamless Tubes are characterized by their robust structure, enabling them to perform effectively in high-stress environments. The absence of welded seams ensures enhanced reliability, making these tubes suitable for demanding applications where integrity and durability are paramount.
2. Specifications and Dimensions
- Outer Diameter: Available from 10mm to 200mm.
- Wall Thickness: Ranges from 2mm to 20mm.
- Length Options: Common lengths include 6 meters, with custom lengths available upon request.
- End Types: Available with plain or beveled ends for straightforward installation.
3. Mechanical Properties
| Property | Value |
|---|---|
| Minimum Yield Strength | 235 MPa |
| Minimum Tensile Strength | 450 MPa |
| Elongation | ≥ 20% |
4. Material Composition
The composition of DIN 2609 Grade ST 35-8 Seamless Tubes typically includes:
- Carbon (C): 0.10% – 0.25%
- Silicon (Si): 0.40% max
- Manganese (Mn): 0.60% – 0.90%
- Phosphorus (P): 0.025% max
- Sulfur (S): 0.015% max
5. Manufacturing Process
DIN 2609 Grade ST 35-8 Seamless Tubes are produced through a seamless process, which involves the following steps:
- Heating: Steel billets are heated to a high temperature.
- Piercing: The heated billets are pierced to create a hollow section.
- Elongation: The hollow section is then elongated to the desired length.
- Heat Treatment: Tubes may undergo additional heat treatment to enhance their mechanical properties.
- Finishing: Final processing includes surface finishing and testing to meet specifications.
6. Applications
DIN 2609 Grade ST 35-8 Seamless Tubes are utilized in various critical applications, including:
- Boiler Manufacturing: Ideal for fabricating components that operate under high pressure and temperature.
- Pressure Vessels: Commonly used in the construction of pressure vessels in chemical and petrochemical industries.
- Heat Exchangers: Suitable for use in heat exchangers due to their thermal stability.
- Oil and Gas Industry: Employed in pipelines and related equipment where high integrity is required.
- Power Generation: Used in steam generation and distribution systems within power plants.
7. Grades and Equivalents
DIN 2609 Grade ST 35-8 Seamless Tubes have equivalents in various international standards, facilitating their use in global applications. Common equivalents include:
- EN 10216-1: European standard for seamless steel tubes for pressure purposes.
- ASTM A106: American standard for seamless carbon steel pipes for high-temperature service.
