GB/T 33228-2016 in English
VALIDAluminum alloy extruded tubes for high-frenquency electric transformer
- Issued on:2016-12-13
- Implemented on:2017-11-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$136.00
《GB/T 33228-2016电站高频导电用铝合金挤压管材》由TC243（全国有色金属标准化技术委员会）归口，TC243SC1（全国有色金属标准化技术委员会轻金属分会）执行，主管部门为中国有色金属工业协会。
Introduction
GB/T33228-2016 Interpretation of the Standard for Aluminum Alloy Extruded Pipes for High-frequency Conductive Use in Power Stations
1. Background and Significance of the Standard
As the power system develops towards high frequency and large capacity, higher requirements are placed on conductive materials. The formulation of the GB/T33228-2016 standard aims to standardize the technical requirements for aluminum alloy extruded pipes for high-frequency conductive use in power stations, and ensure their safe and efficient application in the fields of power transmission and substation.
2. Standard framework comparison
| Standard dimension | GB/T33228-2016 | Comparison standard |
|---|---|---|
| Grade and state | 6101B, T7 | - |
| Chemical composition requirements | In line with GB/T3190 | GB/T3190 |
| Dimension deviation range | Outer diameter ≤8mm: deviation ±1.0mm | - |
3. Interpretation of the core content of the standard
3.1 Product classification and marking rules
The brand, state and size specifications of the pipe must comply with the provisions of Table 1. For example: 6101B brand, T7 state, diameter 200mm, wall thickness 20mm, fixed length 6000mm.
Marking example: Pipe GB/T33228-6101BT7-200×20×6000 3.2 Chemical composition requirements
The chemical composition must comply with GB/T3190, with a focus on the control of aluminum content and its impurity elements. For example: aluminum content should be ≥99.5%, and impurities such as iron and silicon must be strictly limited.
3.3 Dimensional Deviation and Appearance Quality
Dimensional deviation includes outer diameter, inner diameter deviation, length deviation and cutting angle requirements. For example: when the outer diameter is ≤8mm, the outer diameter deviation at any point is ±1.0mm.
4. Implementation Suggestions and Practical Applications
4.1 Material Selection Basis
Select the appropriate grade and state according to the application scenario. For example, the power station environment needs to use 6101B alloy in T7 state to ensure its high strength and high conductivity.
4.2 Production Control
It is recommended that manufacturers conduct chemical composition analysis, dimensional inspection and mechanical property testing in strict accordance with standard requirements. For example, use a Brinell hardness tester to measure Rm and Rp0.2.
4.3 Use and Maintenance
Users should conduct quality acceptance according to standard requirements, focusing on appearance quality and performance indicators. For example, use a conductivity tester to test whether the conductivity is ≥32MS/m.
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