Standing Seam Screws

Standing seam screws demonstrate excellent adaptability in the sliding connection of metal roof panels due to thermal expansion and contraction. According to actual roof displacement monitoring data, under the effect of a day and night temperature difference of 80 degrees Celsius, the cumulative displacement of the roof panel along the slope direction can reach 18 millimeters, and the special sliding sleeve design of the screw allows a maximum of 25 millimeters of free sliding, thereby reducing the shear stress of the screw head by approximately 62 percent. At the same time, after 100,000 fatigue tests simulating thermal cycle displacement, the tightening torque of the screws attenuated by only 7% of the initial value, which is much lower than the 34% attenuation of rigid fixed screws, effectively avoiding board warping or screw breakage caused by obstruction of sliding.

This fastener also provides reliability from the perspective of electrochemical compatibility and color durability. When the screws come into contact with aluminum-magnesium-manganese roof panels of different brands, the potential difference is controlled within 50 millivolts. After a thousand hours of cyclic salt spray and ultraviolet composite aging tests, the insulation resistance of the screw surface coating still remains above 10 megohms, indicating that the attenuation rate of its insulation performance is less than 5%. The actual measurement data of two years of outdoor exposure further shows that the ΔE value of the color difference between the screw head color and the roof panel is only less than one, and no additional painting maintenance is required, making it an ideal choice in projects such as museums and airports that require extremely high consistency in architectural appearance.

Obtain drawings from customers or create drawings based on their specifications or samples.

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When manufacturing the goods, adhere precisely to the original drawings and samples.

After a final inspection, it was meticulously packaged and delivered to the customers.

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