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The quality supervision and spot checks of rubber products recently announced by the Quality Supervision Bureau of Gansu Province showed that the sampling inspection rate of products was 70%.
This time spotted 40 batches of products from 34 companies. The main product categories involved were rubber sheets for industrial use, general V-belts for general transmission, tires for electric vehicles, inner tubes for electric vehicles, and rubber hoses for general water transport fabrics. Products.
The results showed that 28 batches of products from 22 companies were qualified, the qualification rate of the company was 64.7%, and the sampling inspection pass rate was 70%. The overall quality levels of the three products of Lifan tires, inner tubes for power trains, and ordinary V-belts were used. Stability, high pass rate, and poor quality of general-purpose water delivery fabric reinforced rubber hoses.
The main quality problems discovered by the spot inspection were: the tensile strength of the rubber hose, the inner and outer adhesive layers, the elongation at break, the inner and outer adhesive layers, the heat aging properties, the rate of change in tensile strength, the inner and outer layers, The thermal aging performance, the rate of change in the elongation at break, the internal and external adhesive layers are unqualified, and the indicators such as tensile strength, thickness deviation, and elongation at break of industrial rubber sheets are unqualified; The adhesive strength of the rope is not qualified.
Applicable to the construction of real estate, parks, bridges and tunnels, construction of harbors and airports, construction of railways and highways, construction of power and communication engineering, construction of dams and water conservancy projects, energy production, and storage Construction and construction, construction of agricultural production, reserve engineering, construction of municipal infrastructure, greening projects, etc.
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