Metal fence and cantilever gate protection products by world-renowned supplier of the French venue Derek Fox Group, core products, including metal fence, all steel doors and entrance control systems; company's commitment to the product and its assembly accessories shelf life of 10 years. TEL :010-68171233 metal roofing safety testing dynamic pressure test now there are a variety of metal roofing for air tightness, capacity, watertight performance test of the test methods, such as ASTM E 1592 as the representative of the static wind load testing methods; as well as the BRE-BRERWULF British Standard and CSA A 123.21 standard NRC-SIGDERS dynamic wind load test method. However, the wind in the atmospheric environment movement is a volatility, the strength of the wind acting on the stone coated steel roof and need to take into account the size of the factors: wind speed and flow of floc strength, the role of wind direction and flow stability, the building where the location, the building shape. Therefore only the static wind load testing methods are not well simulated in the present state of the stone coated  metal roofing system panel crimping or fastening fatigue damage failure situation, the dynamic wind load test is more and more people paying attention.
 By studying the effect of the storm will wind load spectrum characteristic curves to determine the peak wind effects, wind changes in amplitude, frequency changes, simplifying the rules of formation close to the sine curve, fan and control device to simulate the different stages of the dynamic wind wind load cycle. Set from the five experimental AE, in different experimental stage, the different curves of the peak wind load fluctuations and the number of repeated load was set down to determine the value of the test pressure, it is calculated through a local or wind load specifications comprehensive test data from holes. Roof bellows simulation device, through the combination of stone coated steel roof system is applied to dynamic wind load cycle repeated, can provide a more realistic simulation of a roof system composed of components in a variety of wind conditions between the structural performance of roof system components to further determine the components of the wind-induced failure mechanism, and thus the selection of components and materials for the performance analysis to provide reliable experimental data.
edited by stone coated steel roof tiles