GB/T 34503-2017 in English

GB/T 34503—2017 Tungsten Tube National Standard In-depth Analysis

I. Background and Significance of the Standard

GB/T 34503—2017 Tungsten Tube is the first national standard formulated by China for tungsten tubes produced by powder metallurgy, filling the gap in this field in China. This standard is managed by the National Technical Committee for Standardization of Nonferrous Metals, covering the entire process from material requirements, test methods to inspection rules.

II. Comparison of the main content framework of the standards

III. Analysis of key technical points and application cases

Chemical composition control: W content requirements ≥99.95%, total impurities ≤0.05%. For example, if Al impurities exceed the standard, it will significantly affect the conductivity of tungsten tubes. Therefore, the purity of raw materials must be strictly controlled in production.

IV. Implementation Suggestions and Precautions

• Enterprises: It is recommended to establish a complete quality management system and equip advanced chemical composition analysis and density testing equipment.
• Users: It is necessary to clarify the supply status and technical requirements when purchasing, and indicate special needs when signing the contract.
• Testing agencies: Regularly calibrate measuring instruments to ensure data accuracy, especially in the chemical composition analysis stage.