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Hand Operated Siren is designed to provide effective warnning in applications where there is no power supply such as:
1.Civil defence.Â
2.Camp sites.Â
3.Mountain rescue.Â
4.Frontier sentry and coast guard warning.Â
5.As lightweight, it can be easily transported remote to  locations and folds up to a small size for ease of handling.
Technical Data:
Sound Rating:
120dB(A) ±2 @ 1m
Output frequency:
550±20HZ
Net Weight: 9kg
Transfer distance: 2500m
Material:
Mainly aluminum alloy
F&Q:
1. Why do you choose our company?
We are trading company, we can help our clients to find any kinds of products in China. We are always looking for good manufacturer with good quality and good price for our clients.
2. How can you guanranty your quality?
EVery time we will inspect our factories first. This inspect will include the persons, the present products, their scale etc. If everything is ok, we will start to cooperate. During cooperation, we will go to the factories to test the products to guanranty the products has good quality. If it doesn't meet our requirement, the goods will be refused.
3. Do you have price advantage?
For us, the quality is our first consideration. And the second consideration is the price. We couldn't say we have the lower price, because of quality issue. We need to say we have the best price.
4. How long do you do the export business?
For our company, it starts in 2012. And for our sales persons, they have 8-10years experience to do the international business. They understand each step for the export and do good service for each of our clients.
Carbon Steel Press Fittings
Specifications
The zhengkang Press Fitting System in carbon steel is indicated for use in various types of civil and industrial installations where the stainless steel pipework is not required.
Typical applications are:
- closed-circuit water heating and cooling systems
- compressed air and inert gas systems
- sprinkler systems
The o-ring gaskets, made of black EPDM, are resistant to aging,
heat and chemical additives and are therefore particularly suitable
for all types of treated water.
Conditions of use
- Maximum operating pressure: 16 bar
- Operating temperature: - 20 °C + 85 °C
- Maximum temperature: 120 °C
*Related Products:Carbon Steel Quarter Bend,carbon steel reducing adapter,butt weld carbon fittings,Carbon Steel Male Adapter,weld carbon steel adapter.
Carbon Steel Press Fittings
Reducer Tee Carbon Steel,Carbon Steel Quarter Bend,Carbon Steel Male Adapter,Male Thread Coupling
Zhejiang Zhengkang Industrial Co., Ltd. , http://www.chinazhengkang.com