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Why Choose JQ SMC Molded Products?

Why Choose JQ SMC Molded Products?

  • 2020-06-29

The advantages of JQ composite manhole covers / molded products


1, SMC manhole cover is lighter weight design than cast iron installation to a great extent, easy for one person operation, more convenient for daily inspection and maintenance.

2. The reasonable structural design solves the noise problem caused by the impact between the cover and the frame, and the color in harmony with the environment can be chosen independently.

3. Excellent aging resistance. The SMC composite material itself and the addition of special anti-ultraviolet auxiliary agent make the product have excellent light and heat resistance, and the appearance color firmness is > grade 3 (EN20105-A03 standard).

4. With remarkable insulation and excellent dielectric performance, through the improvement of the formula so that the product has excellent anti-static performance, fully meet the electronic industry SJ / T11159-1998 floor covering and assembly floor electrostatic performance requirements.

5. Good anti-leakage performance.The unique side leak-proof seal design ensures tight contact between the cover and the base, with excellent waterproofing effect and effective protection of all facilities in the well.

6. Excellent comprehensive performance. The properties of the composites themselves give the products excellent high and low temperature resistance (the products can be used at -50~160℃), chemical resistance (acid, alkali, salt, organic solvent, etc.) and dimensional stability (very low coefficient of thermal expansion: 12*10-6/℃).

7. Long service life. Through the use of high performance resin, glass fiber and special production process formula, to ensure the resin penetration in glass fiber, greatly enhance the internal adhesion, so that the product has a high fatigue strength, under the action of a given effective load and frequency, its service life is usually not less than 20 years.

8. Compared with metal manhole covers, SMC is a material that penetrates electromagnetic waves almost without changing the properties (including energy) of electromagnetic waves, so it can be widely used in the telecommunication industry.


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