The expiration date of the valve performance inspection report

1. Valid for 5 years.

2. After obtaining the certificate, check it at least once a year. There are three ways to supervise after obtaining the certificate: 1) factory supervision and inspection and product supervision and inspection;

2) Factory supervision and inspection; 3) Product supervision and inspection.

3. For details, please refer to the conformity assessment of fire protection products.

The center has about fire doors.

The inspection rules of the product may be provided for you.

There is no expiration date issue with the inspection report.

Any test report is only a record of the condition of the sample being tested at the time of the test. In other words, the time effect of the inspection report is fixed at a "point".

That is to say, a valve inspection report, 10,000 years later, can also prove that a valve is qualified when it leaves the factory, but it cannot prove that it is not qualified after the inspection.

The validity period and warranty period of the product only indicate that under the specified conditions of transportation, storage and use, the product quality will not deviate from the test results or deviate from the specified degree of the test results. and not the validity period of the inspection report.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following influential first-line brands of water system valves and industrial valves can be used as a reference, but for reference only: Suzhou Neway Valve, Shanghai Guanlong Valve, Shanghai Qizhong Valve, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

Legal Analysis: Long-term validity. As long as the valve is not in use. After the valve was installed and used in Hu Zaofan, the water could rust the iron, which caused the valve to leak. Generally, domestic valves need to be repaired after two or three years.

Legal basis: Article 490 of the Civil Code of the People's Republic of China Where the parties conclude a contract in the form of a written contract, the contract shall be established when both parties sign, affix their seals or press their fingerprints. The contract is formed when one of the parties has fulfilled its primary obligations and the other party has accepted it before signing, stamping or fingerprinting.

When the law, administrative regulations or the parties agree that the contract shall be concluded in written form, and the parties do not use the written form but one party has performed its main obligations and the other party accepts it, the contract shall be established.