"Competition" of four technical standards for filters

Generally speaking, the technical standards of filter products are divided into four levels, namely national standards, industrial standards, local standards and enterprise standards. According to the filter content, it can be divided into technical conditions, test methods, connection dimensions, series parameters, quality points, etc.

With the increase of joint ventures of domestic main engine manufacturers and the introduction of new models, corresponding international standards (ISO) and filter technical standards of some advanced countries have also been introduced and used accordingly. The standard that the general user of filter needs to know is the technical conditions. There are 12 such standards approved by the State Bureau of Machinery, including the technical conditions of paper filter element of internal combustion engine oil filter, the technical conditions of spin-on oil filter, the technical conditions of internal combustion engine paper core oil filter assembly, the technical conditions of split centrifugal oil filter rotor assembly, the technical conditions of split centrifugal oil filter, the technical conditions of diesel engine paper filter element diesel filter assembly Technical conditions for paper filter element of diesel engine diesel filter, technical conditions for spin-on diesel filter, technical conditions for oil bath and oil-immersed air filter assembly of internal combustion engine, technical conditions for oil bath and oil-immersed air filter element of internal combustion engine, technical conditions for paper filter element of internal combustion engine air filter assembly, technical conditions for paper filter element of internal combustion engine air filter.

These standards specify the technical indicators of oil filter, diesel filter, air filter and three-element filter respectively. The air compressor steam filter also specifies the technical indicators of the gasoline filter. With these standards, those manufacturers that produce hydraulic filters and hydraulic accessories will pay more attention to the quality of their products.