The national standard DT copper nose size standard is based on the specifications formulated by the National Standardization Administration Committee, which is used to guide and unify the production and use of copper nose size. According to the national standard, the size of the copper nose should meet the following requirements:

1. length: in general, the length of the copper nose should be between 50mm- 100mm, and the specific length can be adjusted according to the actual use requirements.

2. Width: The width of the copper nose should be between 10mm and 20mm to ensure its strength and stability.

3. Thickness: The thickness of copper nose is generally 1mm ~ 3mm. Too thin or too thick will affect its service effect and service life.

4. Radius: The radius of the copper nose is generally 5 mm ~10 mm. Too small radius may cause deformation or damage, while too large radius is not conducive to fixation.

The above are the basic requirements of the national standard DT copper nose size standard, aiming at ensuring the quality and performance of copper nose and improving its applicability and reliability.