What are the AD specifications and DIN specifications?

AD specification refers to the German pressure vessel specification (AD2000)； DIN is also the German pressure vessel specification, but it should be said to be the German version of the European boiler and pressure vessel piping specification. AD specifications are usually only used when pressure vessel products are exported to Germany or products that comply with German standards. CE certification mostly implements the European Union's unified standards and specifications, namely PED. AD certification is only done by TUV. For example, when doing PED certification, some customers will require materials to have AD2000 material certificates instead of EU 3.1 material certificates, which means that the materials used must meet the material requirements in the AD2000 standard and have an AD material certificate issued by the organization.

AD specification is the German pressure vessel specification. DIN is the German standard code, equivalent to GB.

The American ASME specification, the British BS5500, the Japanese JISB8243 and the German AD specification, etc. Our country has * * The "Pressure Vessel Safety Technical Supervision Regulations" promulgated by the Quality and Technical Supervision Bureau, GB150 "Steel Pressure Vessels", GB151 "Shell and Tube Heat Exchangers", etc. French CODAP 2006 German Pressure Vessel Code (AD) AD Pressure Vessel Code is compiled by seven departments: Workers' Federation, Boiler, Pressure Vessel and Pipeline Federation, Chemical Industry Federation, Metallurgical Federation, Machinery Manufacturers Association, Technical Association of Large Boiler Entrepreneurs and Technical Supervision Association (VDTUV). The AD specification has many unique technical viewpoints, and it is also a specification with widespread influence in the world. 　　 Compared with the ASME specification, the AD specification has the following characteristics:: 　　① The AD specification only takes a safety factor for the yield limit of the material, and the number is small. Therefore, the product is thin and light in weight ； 　　② AD specifications allow for higher strength grades of steel ； 　　③ In terms of manufacturing requirements, AD specifications are not as detailed as ASME. They believe that this allows manufacturers to have greater flexibility and make it easier to leverage the technical expertise and innovation of each factory. EN 13445 "Unfired Pressure Vessels" is now commonly used in Europe