GB/T 33817-2017 in English
VALIDMethod for determination of the carbon content on the inner surface of copper and copper-alloy tube
- Issued on:2017-05-31
- Implemented on:2017-12-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$136.00
《GB/T 33817-2017铜及铜合金管材内表面碳含量的测定方法》由TC243（全国有色金属标准化技术委员会）归口，TC243SC2（全国有色金属标准化技术委员会重金属分会）执行，主管部门为中国有色金属工业协会。
Introduction
1. Background of standard formulation and analysis of technological evolution
GB/T 33817-2017 is a normative document for the determination of carbon content on the inner surface of copper and copper alloy pipes, filling the gap in domestic testing technology in this field. With the development of industry, copper and copper alloy materials are widely used in petrochemical, air conditioning and refrigeration and other fields, and the demand for accurate determination of carbon content on the surface of materials is increasing.
2. Comparative analysis of standard frameworks
| Standard dimensions | GB/T 33817—2017 | International similar standards |
|---|---|---|
| Scope of application | Determination of carbon content on the inner surface of copper and copper alloy pipes | Wider coverage, including external surface and overall testing |
| Core methods | Oxygen flow combustion-infrared spectroscopy | Thermogravimetric analysis (TGA) and elemental analysis (EA) |
| Detection accuracy | ±5% error range | ±3% international leading level |
3. Implementation suggestions and precautions
Instrument calibration: Regularly perform linear calibration on the tubular furnace heating-infrared analysis carbon and sulfur analyzer to ensure measurement accuracy. It is recommended to use mannitol standard solution or carbon dioxide gas for calibration.
Sample preparation: Strictly follow the degreasing process to avoid external pollution sources affecting the test results. It is recommended to complete all cleaning operations in the fume hood.
Data recording: It is recommended to establish a unified data management system to ensure the integrity and traceability of test records.
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