Where to make PC boards in Humen | PC boards in Humen

)>Where to make boards in Humen | Humen boards
br ) : /rCorrect installation of corrugated boards
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br One-wave type selection:
br If /r corrugated board is used as the lighting strip, the specifications and models of /r corrugated board and color steel plate can be similar.
br If /r corrugated board is used as a skylight, the specifications and models of /r corrugated board and color steel plate should be the same.
br Note: ① If the purlin span is too large, it may cause the corrugated board to warp and deform, causing water leakage.
br ②It is recommended to choose a thickness above.
br Two overlaps
br Side overlap of ordinary color boards
br It is recommended that/r corrugated boards be placed on top of color steel tiles, and pressure strips are added to/r corrugated boards. The pressure strips can be stainless steel, aluminum alloy or Color steel plate. It is better to have the width of the batten with ribs in the longitudinal direction, and it is better to have a thickness of approximately 100cm and a supporting base at the overlap.
br Sandwich composite corrugated board
br If it is overlapped with a sandwich composite corrugated board, a supporting wave should be added to the screw fixing part to better fix the /r lighting board.
br Sandwich flat plate
br For example, if /r corrugated board and sandwich flat plate are overlapped, dig out the foam at the overlap of the sandwich flat plate, and overlap the reverse side of /r trapezoidal wave board with the front side.
br Longitudinal overlap
br It is generally required that the length of the longitudinal overlap is >. If/r the wave pattern of the corrugated plate and the color steel plate is inconsistent, the overlap length should be >
br Three fixed
br The diameter of the nail head of the fixing nail should be more than twice the diameter of the screw handle, and waterproof glue should be added. The nail head should not directly press the board surface to reduce pressure.
br Do not tighten the screws too much, otherwise it may cause stress and cause local cracks on the board surface.
br Do not use rubber pads or asphalt-based waterproof tape sealants for waterproof glue. Neutral glass glue must be used, and acid glue must not be used.
br During the installation process, do not fix the two ends first and then fix the middle. You should fix one end first and construct in the same direction. Otherwise, stress concentration in the middle will occur, causing the product to deform or crack.
br Since the linear expansion coefficient of the /r board is about three times larger than that of metal materials, holes must be drilled on the board before being fixed with self-tapping screws, and the self-tapping screws must be driven in the middle of the hole diameter, otherwise Due to the displacement and insufficient reservation during thermal expansion and contraction, the /r plate around the self-tapping screws may have cracks or shrinkage and deformation of the plate surface.
br Calculated expansion value of reserved expansion space. Maximum temperature change value of linear expansion coefficient length/r. Linear expansion coefficient of plate in ℃. For example: for a /r plate of length, if the temperature difference between day and night is ℃, then the reserved expansion space is at least Want more than that. For example, if self-tapping screws are used, the diameter of the corrugated plate drilling hole should be >+.
br If a layer of /r flat plate or colored light tile is added under the corrugated board, a metal strip must be added to the fixing point of the lower /r board. Otherwise, the dead weight of the /r board will cause the /r board to sag, causing the screws around the The /r plate has cracks.
br ??? Four cleaning
br /rTo remove dust and dirt on the surface of the corrugated board, generally wipe it with a soft cloth or sponge dipped in neutral detergent, and then rinse thoroughly with clean water.
br Five chemical corrosion
br It is forbidden to contact the surface of acidic and alkaline substances on the wet cement surface.
br It is forbidden to come into contact with organic solvents such as benzene, gasoline, carbon tetrachloride, tinas, turpentine, or glue and paint containing such ingredients
br Specifications and dimensions of the board
:
br General grade board
Thickness*length*width:**
br Engineering grade board
Thickness*length*width**
br Where to make boards in Humen|Humen boards