How to distinguish between high quality and low quality steel?
On the basis of the brand number, the following dimensions can also be considered:
1. Appearance inspection: First observe the appearance of the steel. The surface of high-quality steel is smooth and clean, with no obvious defects such as bubbles, cracks, folds, etc. Inferior steel may have obvious defects such as rust, pitting, and scratches.
2. Specifications and dimensions: The specifications and dimensions of high-quality steel are in line with national standards and have small dimensional deviations, while inferior steel may have large dimensional deviations and even bending or distortion.
3. Steel hardness: Steels of different qualities have different hardnesses, which can be tested with a hardness tester. The hardness of high-quality steel meets standard requirements, while inferior steel may be softer or harder.
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