It is dangerous because it contains a gas containing enormous energy in the pressure equipment. It is even more dangerous when the fluid itself is a dangerous fluid (flammable, toxic). The major advanced developed countries have implemented domestic regulations in the past few decades and have reached a fairly high level of safety today. Since the European Community’s market is a market without a national border, it is also fully protected for the free movement of all goods, people, services and capital within this range; given the laws, regulations and administrative regulations of the European Community The extent and extent of the difference; in view of the procedural differences in the certification and testing of pressure equipment in the European Community countries and other factors may become trade barriers between countries; so the Council of the European Council adopted on May 29, 1997 The law on pressures tends to be consistent (97/23/EC), the PED Directive. The directive came into effect on November 29, 1999, and has a 30-month grace period before May 28, 2002, that is, the product can be selected to apply PED or the original regulations of each country (but only the original regulations of the countries apply only) It can be circulated in the country. From May 29, 2002, the original regulations of all countries will be abolished, and PED will become a mandatory regulation for European pressure equipment.
PED is applicable to the European Economic Area (EEA) countries, namely the EU-25 (Austria, Belgium, Denmark, Germany, Greece, Spain, France, Ireland, Italy, Luxembourg, the Netherlands, Portugal, Finland, Sweden, the United Kingdom, Estonia, Latvia, Lithuania, Poland, Czech Republic, Slovakia, Hungary, Slovenia, Malta, Cyprus); plus Member States of the European Free Trade Agreement (Iceland, Liechtenstein, Norway); and also countries that are preparing to join the European Union (Turkey) Wait).
According to the PED specification, pressure equipment and components above a certain pressure/volume threshold must: Â
â—Safety Â
â— Meet the basic safety requirements for design, manufacturing, and testing Â
â— Meet the appropriate conformity assessment procedures Â
â— Attached to the CE mark and related regulations Â
• Pressure equipment and components below a certain pressure/volume threshold must: Â
â—Safety Â
â—Designed and manufactured according to perfect engineering practices Â
â— Attach the relevant regulations (you do not need to attach the CE mark) Â
â—Selection of product classification and conformity assessment mode
Manufacturers must analyze and classify products to accommodate different PED regulations for different pressure equipment. Products can be categorized into five categories: PED Clause 3.3 (designed and manufactured in accordance with the improved engineering practices of Member States), and Category I through Class IV. The higher the risk, the higher the classification level and the stricter the regulations.
(1) stainless steel polishing machine output good beam quality, including mode and mold stability; (2) stainless steel polishing machine output power is large enough (this is the key to speed and effectiveness), whether the energy is stable (usually requires stability of 2%, in some occasions is required 1%, so as to process the ideal effect); (3) stainless steel polishing machine should have high reliability, should be able to work continuously in harsh industrial processing environment; (4) stainless steel polishing machine itself should have good maintenance, fault diagnosis and chain function, downtime should be short; (5) the operation is simple and convenient, the control key function is clear, can refuse illegal operation, protect the stainless steel polishing machine from damage. Stainless steel polishing machine should follow the principle of purchase: stainless steel polishing machine technology has many valuable characteristics. However, specific to a product is suitable for the use of this technology, should follow the following principles :(1) with other existing methods can not be solved, only with polishing processing method to solve; (2) the existing other processing methods can be solved, but if the polishing processing method can greatly improve product quality, improve production efficiency and significantly increase economic and social benefits; (3) to fully consider the processing process with polishing processing related to those matching links; (4) to pay attention to the application of polishing processing and conventional processing composite processing technology, in order to make full use of their strengths
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