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2021-10

How to judge the quality of steel formwork?

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1. Texture of steel formwork: it is the standard to judge the quality of building formwork. Regular textures are beautiful and generous. Do not choose those building formwork with disorderly textures.

1. Texture of steel formwork: it is the standard to judge the quality of building formwork. Regular textures are beautiful and generous. Do not choose those building formwork with disorderly textures.
2. Color of steel formwork: high-quality building formwork should have natural color, clear wood grain, and the material is visible to the naked eye. If the surface color of the building template is deep and heavy, the thicker paint layer may be intentional to cover up the surface defects of the building template, especially when the building template is sealed with six sides.
3. Crack of steel formwork: Crack of medium and low-grade building formwork is inevitable, but it is not good if it is too large. Some cracks are produced between the texture of the wood, this crack will not extend, can be assured to use, but some cracks are penetrating the texture, you must not buy, because these cracks will extend, have a great negative impact on the future.
4. The knots of the steel template: the knots, which can be divided into living knots and dead knots. As a natural product, it is impossible to have no knots. The reasonable distribution of the knots will make the wood products more beautiful. Superior products are not allowed to have defective knots. The state stipulates that any living knots with a diameter of ≤ 3mm and dead knots with a diameter of ≤ 2mm and without falling off and being very dense shall not be regarded as defective knots.
5. Pressure of construction steel formwork: When going to the factory for inspection, he went directly to his hot press to see how much pressure he exerted. Generally, the factory exerted 14mpa to 20mpa, and it also depends on the size of the oil top of the press, because the pressure is calculated according to the unit area, and the pressure is calculated by hitting 20 pressure on two 360 oil tops, and the force is 3.14*0.18*0.18*20=2.03472 units, however, the pressure force of the two 320 oil tops hitting 14 is 3.14*0.16*0.16*14=1.125376 units, which is almost more than double that of the second type. Therefore, the 12mm plate will be pressed to only 11mm if one type of pressure is used to press the second type of pressure plate.
Special attention should be paid to the fact that some building templates are made of tree core materials and materials close to bark, so as to prevent merchants from raising the price. The wood used in some building templates has been eaten by a large number of insects, thus leaving many insect eyes. The wood of this building template is not very good, so you should be careful when buying it.

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