People often meet some problems when using galvanized square tubes. In general, the pipes that produce problems are inferior products, not only in the installation of the impact, the use of the harm is also great, in order to allow people to better buy and use, today Ji'nan galvanized square pipe manufacturers I will tell you some ways to distinguish the advantages and disadvantages of galvanized square tubes.
Galvanized square tube is a hollow square section steel tube with square cross section shape size made of hot rolled or cold rolled galvanized strip or galvanized coil after cold bending and then high frequency welding.
First of all, we need to look at the surface, if the surface is scars, then the raw material used by the square tube is not good, the content of the impurity is high, so it leads to the appearance of the scar. This phenomenon can be found only by careful observation.
The second is to see the surface pattern of the galvanized square tube in Ji'nan. The high quality product lines are evenly distributed, and the cracks will not occur. If the cracks are found, the quality of the raw materials is too poor to bear the heat in the process of production, and the cracks will eventually lead to cracks.
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