GB/T 17396 27SiMn Hot-Rolled Seamless Steel Tubes Thick Wall Tube For Hydraulic Pillar Service
The GB/T 17396 27SiMn hot-rolled seamless steel tubes are widely used in the hydraulic pillar service industry due to their excellent strength and durability. These thick wall tubes are specifically designed to withstand high pressure and provide reliable performance in various hydraulic applications. In this article, we will explore the material composition, key features, chemical composition, mechanical properties, steel grade, application, and potential alternative grades for GB/T 17396 27SiMn hot-rolled seamless steel tubes.
Material and Specification
The material used for GB/T 17396 27SiMn hot-rolled seamless steel tubes is 27SiMn. These tubes are manufactured according to the guidelines set by the GB/T 17396 standard, ensuring their quality and adherence to industry standards. The tubes are produced through a hot-rolling process, resulting in a seamless structure with a thick wall. The dimensions and tolerances of the tubes are specified in the standard, ensuring consistency and compatibility in various hydraulic pillar service applications.
Key Features
The GB/T 17396 27SiMn hot-rolled seamless steel tubes offer several key features that make them highly suitable for hydraulic pillar service:
- Excellent Strength: These tubes exhibit exceptional mechanical strength, allowing them to withstand high pressure and heavy loads in hydraulic systems.
- Thick Wall Design: The tubes have a thick wall construction, providing enhanced durability and resistance against wear and tear.
- Seamless Structure: The seamless manufacturing process ensures a consistent structure without any welds or joints, minimizing the risk of leaks or failures.
- High Corrosion Resistance: The 27SiMn material used in these tubes offers excellent resistance to corrosion, making them suitable for demanding environments.
- Good Weldability: These tubes can be easily welded and fabricated, allowing for convenient installation and integration into hydraulic systems.
Chemical Composition
The chemical composition of GB/T 17396 27SiMn hot-rolled seamless steel tubes is as follows:
| Element | Chemical Composition (% by weight) |
| Carbon | 0.24-0.32 |
| Silicon | 1.10-1.40 |
| Manganese | 1.10-1.40 |
| Chromium | ≤0.30 |
| Nickel | ≤0.30 |
| Copper | ≤0.30 |
| Phosphorus | ≤0.035 |
| Sulfur | ≤0.035 |
Mechanical Properties
The mechanical properties of GB/T 17396 27SiMn hot-rolled seamless steel tubes are as follows:
| Property | Value |
| Tensile Strength (MPa) | ≥800 |
| Yield Strength (MPa) | ≥720 |
| Elongation (%) | ≥15 |
| Hardness (HB) | ≤217 |
Steel Grade
The steel grade for GB/T 17396 27SiMn hot-rolled seamless steel tubes is 27SiMn. This specific grade offers a balance of strength, toughness, and corrosion resistance, making it well-suited for hydraulic pillar service applications.
Application
GB/T 17396 27SiMn hot-rolled seamless steel tubes find extensive application in the hydraulic pillar service industry. They are used in the construction of hydraulic pillars, which support underground mine roofs and provide stability and ety. The tubes are employed to withstand the high pressure and heavy loads encountered within hydraulic pillar systems.
Possible Alternative Grades
While GB/T 17396 27SiMn hot-rolled seamless steel tubes are widely used, there are a few alternative grades that can be considered for specific applications. Some possible alternative grades include:
- 20SiMn: This grade offers a similar composition to 27SiMn with slightly lower strength characteristics.
- 30CrMnSiA: This grade offers higher strength and toughness properties compared to 27SiMn, suitable for applications requiring enhanced performance.
- 35SiMn: With a higher silicon content, this grade provides improved corrosion resistance and weldability.
- 42SiMn: This grade exhibits higher tensile strength and hardness, making it suitable for more demanding hydraulic pillar service applications.
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