20x20mm 25x20mm Galvanized Square Tubes Rhs Plain End Shs Square Hollow Section

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Quality of Galvanized Square Tube

Below are the methods to identify the good and bad quality of galvanized square pipes for your reference.

1. Color and Luster

One of the ways to identify a galvanized square tube is to observe its color and luster. A galvanized square tube with a smooth and bright color is better. This can be observed by the naked eye. When you choose one, you can pay attention to its color and luster.

2. Zinc Layer Thickness

Generally speaking, the thicker the zinc layer the better the quality of the galvanized square pipe will be. This is because the zinc layer provides good anti-corrosion properties for the pipe. Especially for long-term exposure to the outdoor environment, the thicker the zinc layer of galvanized square pipe the less likely it is to rust.

3. Appearance

The quality of the tube can be easily seen from its appearance. If the galvanized layer on the surface of the square tube is uneven and uneven on a large scale, it can be judged as a substandard product. In addition, if there are pockmarks and white spots on the surface of the galvanized square tube, this also indicates that it is of inferior quality.