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| Cross-sectional Dimensions | Tolerances | Standard Lengths |
|---|---|---|
3×3 |
±0.1 |
100–1000 |
4×4 |
±0.1 |
100–1000 |
5×5 |
±0.1 |
100–1000 |
6×6 |
±0.15 |
100–1000 |
8×8 |
±0.15 |
100–1000 |
10×10 |
±0.2 |
100–1000 |
15×15 |
±0.2 |
100–500 |
20×20 |
±0.25 |
100–500 |
Frequently Asked Questions
Q1
What do the cross-sectional dimensions in the table represent?
The cross-sectional dimensions (e.g., 3×3, 5×5, 20×20) refer to the width and height of the material's cross-section measured in millimeters. These are standard square profiles used to ensure consistent fit and compatibility in various applications.
Q2
What do the tolerance values (e.g., ±0.1, ±0.25) mean?
Tolerances indicate the allowable deviation from the specified dimension during manufacturing. For example, a tolerance of ±0.1 mm means the actual dimension may vary by 0.1 mm above or below the nominal size, ensuring precision and quality control.
Q3
Why do larger cross-sections have higher tolerance values?
Larger profiles are inherently more difficult to manufacture to very tight tolerances due to the increased material volume and thermal expansion during processing. As a result, slightly wider tolerance ranges are applied to larger cross-sections such as 15×15 and 20×20.
Q4
What do the standard lengths (100–1000, 100–500) refer to?
Standard lengths refer to the available cut lengths (in millimeters) for each profile size. Smaller profiles (3×3 to 10×10) can be supplied in lengths from 100 mm up to 1000 mm, while larger profiles (15×15 and 20×20) are available in lengths up to 500 mm.
Q5
Can custom lengths be ordered outside the standard range?
In many cases, custom lengths beyond the listed standard ranges may be available upon request depending on the manufacturer's capabilities and minimum order quantities. It is recommended to contact the supplier directly to discuss specific requirements.
Q6
How do I choose the right cross-sectional size for my application?
Choosing the correct size depends on load requirements, space constraints, and compatibility with mating components. Smaller profiles suit precision or lightweight applications, while larger profiles offer greater strength. Always verify tolerance requirements to ensure proper fit within your assembly.