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| Material: | Aluminum |
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NCC is a leading global manufacturer of multi-function louvers whose rugged, high-performance products have been used many times around the world.
NCC's louvers have an energy-efficient aerodynamic design and very low pressure drop characteristics. The robust all-metal construction ensures the long service life of the NCC noise reduction louvers. If required, we can also supply the necessary supporting steel structures and provide comprehensive installation services.And for each individual project, it can be adjusted according to site conditions, as well as environmental factors.
| No | Free Area Velocity
(m/s)
|
Total weight of sand injected
(Kg)
|
Block the weight of sand
(Kg)
|
Sand control rate
(%)
|
Loss of pressurel
(Pa)
|
| 1 | 0.5 | 1 | 0.95 | 95 | 8 |
| 2 | 1.5 | 1 | 0.88 | 88.0 | 15 |
| 3 | 4.0 | 1 | 0.56 | 56.0 | 85 |
| 4 | 6.0 | 2 | 0.85 | 29.0 | 110 |
| 5 | 8.5 | 2 | 0.28 | 14.0 | 210 |
|
Gradesize
μm
|
Mass
%
|
| >699 | 5 |
| 423 to 699 | 30 |
| 353 to 422 | 120 |
| 251 to 352 | 300 |
| 211 to 250 | 200 |
| 152 to 210 | 270 |
| 104 to 151 | 60 |
| 76 to 103 | 10 |
| <76 | 5 |
The specification shown in Table 2 matches very closely desert type sand and dust, and illustrates an overall grade. Other grades of sand can also be used for the tests and are specified as follows:
NCC Acoustic Laboratory - A Laboratory Professionaly Committed to Serving Customers
We exert every ounce of our strength to construct a high-end, avant-garde laboratory endowed with autonomous control capabilities. For all bespoke products, be it in terms of specifications, dimensions, or acoustic requisites, prior to entering the mass production phase, we shall enforce rigorous and meticulous pre-production sample testing procedures. Only upon thorough confirmation that all indicators are up to par will we invest a considerable amount of human and material resources to embark on mass production endeavors, thereby effectively guaranteeing that each and every batch of large-scale goods delivered to clients possesses outstanding quality.
· NCC is the first and currently the only manufacturer in China whose louver series products have passed AMCA certification.
· BS EN Stardard