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压型钢板质量检查的项目与允许偏差

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压型钢板质量检查的项目与允许偏差

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压型钢板质量检验项目检验内容及所需检验数量的检验方法:压型钢板成型部位不得有裂纹,抽查连接件数量的5%,观察检验不少于10件。
压型钢板成型后,涂层和涂层不得有肉眼可见的裂纹、剥落、划伤等缺陷。
压型钢板成型后,板面应平直,无明显翘曲;板面应清洁,无油污、明显划痕、凿痕等;切口应平直,切口表面应平整,板面边缘应无明显的棱角、凹凸和波形,也不会有皱纹。
压型钢板尺寸允许偏差应符合要求,并用拉线、钢尺、角尺检查。压型钢板尺寸允许偏差单位为mm。允许偏差波高2.5,覆盖宽度+10.0-2.0,板长+10.0,波距+2.0,测量弯曲度。
注:L1为实测长度,指板长两端扣除0.5m后的实际长度(小于10m)或扣除后的可选10m长度。当板形复杂或精度要求较高时,可针对单个工程制定相应的允许偏差

Inspection method for inspection contents and required inspection quantity of quality inspection items of profiled steel plate: there shall be no cracks at the forming part of profiled steel plate, and 5% of the number of pieces connected shall be spot checked, and no less than 10 pieces shall be observed and inspected.

After the profiled steel plate is formed, the coating and coating shall be free of cracks, peeling, scratches and other defects visible to the naked eye.
After forming the profiled plate, the surface of the plate shall be straight without obvious warpage; the surface shall be clean without oil stain, obvious scratch, gouge, etc. the cut shall be straight, the cut surface shall be neat, the edge of the plate shall be free from obvious angle, concave convex and wave shape, and there shall be no wrinkles.
The allowable dimension deviation of profiled plate shall meet the requirements, and shall be checked with stay wire, steel ruler and angle ruler. The allowable dimension deviation of profiled steel plate is in mm. The allowable deviation wave height is 2.5, the covering width is + 10.0-2.0, the plate length is + 10.0, the wave distance is + 2.0, and the bending is measured.
Note: L1 is the measured length, which refers to the actual length (less than 10m) after deducting 0.5m at both ends of the board length or the optional 10m length after deducting. When the plate shape is complex or the accuracy requirement is high, the corresponding allowable deviation can be formulated for single project

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