1. Appearance of galvanized pipes
The appearance quality standard of galvanized pipes is required. The surface plating is complete and uniform in color. There is no flow, tumor tumor, and excess block to ensure that there are no blemishes such as leakage plating and dew.
2. Dalvation layer thickness
The thickness of the zinc layer of galvanized pipes is an important indicator for judging the mass of galvanizing. Generally, the unit μM is represented by the unit μM, and the weight of the galvanized layer per square meter can also be represented by: 1g/m2 = 0.14 μm. Because zinc and steel have different magnetic and polarization rates, the thickness of the zinc layer can be determined that the thickness of the zinc layer can be measured by a galvanized layer. To determine the weight of the zinc layer, it is necessary to scrape the galvanized layer sampling and measure the chemical methods such as chloride chloride.
3. Uniformity of galvanized layer
The quality of the high -quality galvanized layer is uniform, without leakage or after plating damage. There is no red immersion after testing by copper sulfate solution, indicating that it has no leakage plating and damage after plating. This is the standard for high -quality galvanized pipes to ensure that its performance and appearance are best.
4. Attraction of galvanized layer
The adhesion of galvanized layer is an important indicator of the quality of galvanized steel pipes. It reflects the firm combination of galvanized layers and steel pipes. After the bath reaction, the surface of the steel pipe will form a zinc iron mixed layer with galvanized liquid. Through scientific galvanized technology, the attachment of the zinc layer can be enhanced. Using the rubber hammer to be tapped lightly, the zinc layer is not easy to fall off, indicating that the adhesion is good.
