The fan testing standard is a national standard implemented on July 1, 2011. The promulgation and implementation of this standard is of great significance for regulating the market of China's fan industry and promoting the healthy development of the industry. This standard specifies the classification, marking, requirements, testing methods, etc. of ventilation fans, and is applicable to axial flow fans and centrifugal fans used in industrial and construction fields 1. Product category: 1. It can be divided into: ventilation fans for air conditioning and general-purpose fans for general purposes according to their purpose; 2. According to structural types, there are two types: integral and semi split; 3. According to the rotation direction of the impeller, it is divided into two types: oblique flow and mixed flow. 4. According to aerodynamic performance, it is divided into categories a, b, and c. Class A products are used in particularly humid or corrosive gas environments; Class B and C products are used in the exhaust and supply ducts of general locations or ordinary fans Secondly, technical requirements: appearance quality. 1. There should be no scratches or other defects that affect the use. 2. The surface should be free from cracks, obvious scratches, and other defects that affect performance such as scars and rust spots. 3. The mating surfaces of each component should not be loose, and the fasteners should not fall off. 4. The blades and front disc should closely fit and rotate flexibly and reliably, without obvious gaps, and maintain a clean state
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China