The bearing capacity of the steel grating is set according to the model you need, and there are many customized thicknesses to increase the load of the steel grating, so the load of the steel grating is also limited. It's not that we can customize it by ourselves, so let's talk about the load condition and deflection test of steel grating in detail.
The steel grating is a grating composed of load-bearing flat steel and cross bars arranged at a certain distance. The warping direction is the load-bearing flat steel, that is, the length direction of the steel grating; the latitude is the cross-bar, that is, the width of the steel grating. direction.
After the steel grating is manufactured, the compressive strength should be tested if required by the customer. The load and deflection test method of steel grating can be selected with reference to GB/T14452.
Steel grating test equipment: The test is carried out on a hydraulic universal data testing machine, which should have first-class accuracy and be able to withstand 25% more load capacity than the sample. The amount of load tested should be accurate to 3%. The tester used for deflection testing should be accurate to 0.01%.
Sample Fabrication: The manufacturer of the steel grating shall use the same material and fabrication method to fabricate the sample steel grating, which is also the experimental sample used for testing, when fabricating each standard or each batch of goods.
The three parts in contact with the sample and the testing machine should be flat and ensure good contact with each flat steel. The sample must be flat.
Sample size: generally used for testing, the sample length is 550 mm, the distance of the backup roller is 580 mm, the length of the sample is 900 mm, the distance of the backup roller is 1160 mm, and the length of the backup roller should be greater than the width of the sample. During the test, use the zigzag indenter of the testing machine to straighten the middle of the steel grating, and the length of the zigzag indenter should be greater than the width of the steel grating sample. Before increasing the load, it must be ensured that the head of the backup roll and each flat bar are in contact.
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