What is the standard for pressure vessels

What is the standard for pressure vessels

A pressure vessel refers to a closed equipment that holds gas or liquid and carries a certain pressure. In order to implement scientific management and safety supervision 

more effectively, China's "Pressure Vessel Safety Supervision Regulations" classify pressure vessels into three categories based on work pressure, medium hazard, and their 

role in production.And different regulations have been made for the design, manufacturing process, inspection items, content, and methods of each category of pressure 

vessels. 

The pressure vessel has implemented the import commodity safety and quality permit system, and goods without an import safety and quality permit certificate are not 

allowed to be imported. It should be classified according to the latest TSG21-2016 "Safety Technical Supervision Regulations for Fixed Pressure Vessels", first divided into 

the first group of media and the second group of media according to the medium, and then classified into categories I, II, and III according to pressure and volume. The 

so-called first, second, and third categories in the old volume regulations are no longer applicable.

A pressure vessel is a sealed container that can withstand pressure. Pressure vessels have a wide range of applications and play an important role in many sectors such 

as industry, civilian use, military industry, as well as in many fields of scientific research. Among them, pressure vessels are most commonly used in the chemical and 

petrochemical industries, with pressure vessels used only in the petrochemical industry accounting for about 50% of the total number of pressure vessels. Pressure 

vessels are mainly used in the chemical and petrochemical industries for processes such as heat and mass transfer, reactions, as well as for storing and transporting 

gases under pressure or liquefied gases; It is also widely used in other industrial and civilian fields, such as air compressors. All types of specialized compressors and 

auxiliary equipment for refrigeration compressors (coolers, buffers, oil-water separators, gas storage tanks, evaporators, liquid coolant storage tanks, etc.) are all 

pressure vessels.

Encouraged by national industrial policies, the metal pressure vessel industry is encouraged by relevant national industrial policies listed in the relevant industrial 

policies. A favorable industrial policy environment is conducive to the sustainable development of this industry in the future.

The upgrading of the equipment manufacturing industry is a necessary path for China to become a manufacturing powerhouse. The technological level and strength 

of the equipment manufacturing industry directly affect and determine the competitiveness of its downstream industries and products, and is an important manifestation 

of the country's comprehensive national strength. Throughout the world's industrial powerhouses, without exception, they are all strong countries in the equipment manu

facturing industry. Benefiting from the sustained and rapid development of China's national economy and strong support from the government, the transformation of 

China from a manufacturing powerhouse to a manufacturing powerhouse has become an inevitable trend. Against the backdrop of industrial equipment upgrading in 

China, important application areas of metal pressure vessels, such as clean energy applications, new energy manufacturing, and seawater desalination equipment manuf

acturing, have been included in the "Guidelines for High tech Industrialization Priority Areas (2007)" and the "Guiding Catalogue for Industrial Structure Adjustment (2005 

edition)". The upgrading and replacement of downstream industries will undoubtedly bring huge development opportunities and market prospects to the metal pressure 

vessel manufacturing industry.

The development focus of the equipment manufacturing industry is gradually shifting towards the Asia Pacific region. Due to the impact of economic globalization and 

increasing labor costs, the focus of the world's manufacturing industry is gradually shifting towards the Asia Pacific region. As the most widely accepted and applied 

pressure vessel standard internationally, ASME certification in the United States is being studied and promoted by more and more enterprises in China. According to 

statistics from the China Chemical Equipment Association, there were 260 ASME certified manufacturers in China in 2007, an increase of 33% compared to the previous 

year; As of June 2009, this number has increased to 390, ranking second in the world. Among them, Jiangsu Province has the highest number of licensed enterprises at 

126. After years of development, China's manufacturing industry has established a considerable scale and strength foundation, providing a realistic possibility for foreign 

countries to transfer equipment manufacturing industry to China.

On the basis of introduction, absorption, digestion, and innovation, new technologies and processes suitable for China's national conditions have been developed, and a large 

number of technical backbones and experienced managers have been trained, possessing the core competitiveness to explore domestic and foreign markets.