What are the categories of industrial pumps?

According to incomplete statistics, there are currently 750 to 800 standards for various types of machines, including compressors, fans, steam turbines, gas turbines, refrigerators, and expanders； “Standard quantities for “pump” type centrifuges; certain standards related to pumps. In terms of standard requirements, there are more domestic standards than foreign ones, and there are numerous pumps with a long history of production (over 100 in total). Standards such as ASME/ANSI B73.3M-1997 SPECIFICATION FOR SEALLESS HORIZONTAL END SUCTION CENTRIFUGAL PUMPS FOR CHEMICAL PROCESS – Specifications for leak-free horizontal suction centrifugal pumps used in chemical processes; API STD 685-2000 SEALLESS CENTRIFUGAL PUMPS FOR PETROLEUM, HEAVY DUTY CHEMICAL, AND GAS INDUSTRY SERVICES – Leak-free centrifugal pumps for use in the petroleum, heavy chemicals, and gas industries; VDMA24279-1993 SEALLESS CENTRIFUGAL PUMPS – Leak-free centrifugal pumps; HG/T 2730-1995 Magnetic drive centrifugal pumps for chemical processing; JB/T 7742-1995 Small magnetic drive centrifugal pumps; JB/T 8400-1996 Leak-free magnetic drive plastic self-priming pumps; JB/T 53304-1999 Small magnetic drive centrifugal pumps. Product quality grading: Note: ASME is the abbreviation for The American Society of Mechanical Engineers ； VDMA is the abbreviation for the German Engineering Federation. There are significantly more domestic standards for compressors and related devices such as fans, steam turbines, gas turbines, and refrigerators than foreign standards; you can check this by searching online