Electromagnetic valve of association and relevant certification
Electromagnetic valve of association and relevant certification electromagnetic valve UL certification anonymous Internet times is underwriters laboratories (
UL underwriters laboratories is the most authoritative, is also the world is engaged in the security test and evaluation of large civil institutions.
It is an independent, non-profit, professional organization for public safety test.
It is mainly engaged in product safety certification and safety certification business, the ultimate goal is to get fairly safe level for the market of goods, make great contribution to the health and property safety guaranteed.
UL was built in the year, during the past hundred years of development, UL has become a world famous certification body, its own has a set of strict organization and management system, the standard development and product certification program.
Is CSA (Canadian standards association
For it is established in years, Canada's first * industrial standard of non-profit institutions.
In the north American market sales of electronics, electrical appliances and other products need to obtain safety certification.
The CSA is Canada's largest security certification bodies, is also one of the most famous security certification institution in the world.
It can for machinery, building materials, electrical appliances, computer equipment, office equipment, environmental protection, medical and fire safety, sports and entertainment, etc, all types of products to provide a safe authentication.
Years ago, the CSA certified products can only sells on the market in Canada, CSA International now is approved by the federal government for national recognized testing laboratory.
FM global companies through its 'FM approved' (
Institutions of industrial and commercial products to the world to provide testing and certification services.
'FM approval certificate' on a global scale is widely acknowledged that he shows that the product or service to consumers have passed the United States and the highest standards of testing.
FM certification testing products for the fire protection equipment provided for the dangerous sites, electrical and electronic equipment, facilities, fire reconnaissance, signal equipment, building materials and other products manufacturer certification certificate;
'CE' mark is a kind of security authentication marks, is considered a manufacturer to open the passport and enter the European market.
All products with 'CE' mark is domestic sales in the European Union members, do not need to conform to the requirements of each member, so as to realize the free circulation of goods within the eu member states.
Market in the eu 'CE' mark is a compulsory certification mark, whether the products of the enterprises within the eu, or products of other countries, to free circulation in the eu market, must be labeled with 'CE', to show that the product is in conformity with the European Union 'the new methods of technical coordination and standardization' basic requirements of the directive.
This is a mandatory requirement put forward by the European law on product.
Kur-azaz safety registration certification is the range of pressure piping components, valve products is one of the main content.
1 mpa (
Gas, liquefied gas, steam medium or flammable, explosive, toxic, corrosive, the highest working temperature is higher than or equal to the standard boiling point of liquid medium, and nominal diameter greater than 25 mm pipe, need to apply for AZ safety registration.
NEPSI is approved by the international electrotechnical commission IECEx international explosion-proof laboratory;
Is authorized by the state administration of production safety supervision and administration of the national production safety explosion-proof electrical inspection center (Shanghai
The class a qualification of production safety inspection)
The state administration of quality supervision, inspection and quarantine (
Approved by the national industrial products production license office explosion-proof electrical equipment examination department explosion-proof instrument workstation.
NEPSI laboratory was established in years, and in years officially put into operation.
Years, explosion-proof laboratory approved by national labor department review, officially named 'national instruments explosion-proof safety supervision and inspection.
The EX logo is for explosion-proof certification system of the equipment.
Comply with European standard / / EC (
Indicating devices, systems and accessories must be certified the EX.
ATEX directive from (date) (month) (year) to enforce, and replaces the previous / / EEC, / / EEC, / / EEC and / / EEC instructions.
ATEX directive covers products are divided into different groups.
According to the time of the existence of explosive gas and frequent sex divide the regional level.
Different levels of area have different levels of security requirements of product.
Ann mark MA is coal.
State administration of coal mine safety shall be responsible for the supervision and administration of mining products safety sign work throughout the country, the coal mining equipment, materials, instruments and meters and other products for safety management system.
Since (date) (month) (year) to perform coal logo management products, after having obtained the certificate of safety sign, the manufacturer must be in to engaged in the production and sales of the product, and use the safety sign.
Mining enterprises are strictly forbidden to purchase and use without safety sign products.