Galvanized steel pipes have strong load-bearing capacity and have been used for a long time. As shed body skeletons, galvanized steel pipes are increasingly used in the construction of greenhouses. So how do you choose a qualified galvanized steel pipe? The Master Zhang of Xiaonanzhuang Village in Luocheng Street, who has been engaged in steel pipe business for many years, provided us with a few tips:
The first is to look at the surface gloss and roughness. The high-quality galvanized steel tube has a bright shiny color, a smooth and smooth surface, a fine texture, and no roughness such as pits or trachoma. The sound is crisp and sweet when tapped. The poor quality of the surface of the steel pipe is not shiny, the gloss is poor, the surface is rough, and the sound is dull when tapped.
Next look at the section. The cutting section of the high-quality steel pipe is ground very cleanly and has a uniform wall thickness. Poor quality steel pipes often have iron thorns on their cross sections, and their thickness is not uniform when they are carefully observed.
Look at the weight again. Generally speaking, galvanized steel pipes are available in 1.2-inch and 1.5-inch diameters. The wall thicknesses are 3.25mm, 2.55mm, and 2.75mm. Each has a diameter of 1.5 inches, a wall thickness of 2.75mm, and a length of 6 meters. The weight of the steel pipe is 38 pounds. If the steel pipe of the same specification does not reach 38 pounds, it means that it is a poor quality steel pipe.
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