Jiangsu Haifa Machinery Manufacturing Co., Ltd.

The "GB 19762-2025 Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Centrifugal Pumps," released in 202, was officially implemented on March 1, 2026. This standard formally replaces two old standards: "GB 19762-2007 Minimum Allowable Values of Energy and Evaluating Values of Energy Conservation of Clear Water Centrifugal Pumps" and "GB 32284-2015 Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Petrochemical Centrifugal Pumps." Among these, GB 32284-2015 was abolished on March 1, 2026, and is entirely superseded by GB 19762-2025.

I. Change in Standard Positioning: From "Petrochemical Pump-Specific" to "Unified Standard for Centrifugal Pumps"  
GB 32284-2015 had a clear target, mainly focusing on petrochemical centrifugal pumps used for conveying clean liquids with closed impellers in industries such as petroleum and chemicals. It was more like a dedicated energy efficiency evaluation standard for pump products in the petrochemical sector. In contrast, GB 19762-2025 is directly titled "Minimum Allowable Values of Energy Efficiency and Energy Efficiency Grades for Centrifugal Pumps," with a significantly expanded scope. It no longer targets only petrochemical pumps but integrates clear water centrifugal pumps and petrochemical centrifugal pumps into a single mandatory energy efficiency standard system. The core reason for this is that, despite their different application scenarios, clear water centrifugal pumps and petrochemical centrifugal pumps share strong similarities in basic working principles, energy efficiency evaluation methods, and testing methods, providing a foundation for unified management.

II. More Unified Standard System, Reducing Confusion for Enterprises  
In the past, clear water pumps followed GB 19762-2007, while petrochemical pumps followed GB 32284-2015. For pump manufacturers if products involved both general industrial water systems and petrochemical or chemical process systems, issues such as inconsistent standard references, discrepancies in bidding documents, and differing certification bases often arose. After the implementation of GB 19762-2025, clear water centrifugal pumps and petrochemical centrifugal pumps are integrated into the same standard. For manufacturing enterprises, subsequent product design, testing, energy efficiency certification, and bidding responses can uniformly reference GB 19762-2025. The China Quality Certification Center has also clarified that, starting March 1, 2026, new applications for centrifugal pump energy efficiency certification adopt the new standard, and old standard certification certificates will no longer be issued.

III. Energy Efficiency Grades Still Divided into Three Levels, but Requirements Are Stricter  
The new standard still adopts a three-level energy efficiency system (Level 1, Level 2, and Level 3), where Level 1 represents the highest efficiency, and Level 3 is the minimum allowable value, i.e., the minimum for market access. This means that if a customer requires "pump energy efficiency not lower than GB 19762-2025," it is generally understood that at least Level 3 energy efficiency must be met. If the customer explicitly requires energy-saving, high-efficiency, or Level 1 energy efficiency, higher grades should be followed. to GB 32284-2015, GB 19762-2025 generally imposes higher efficiency requirements for pumps at the same grade In other words, a petrochemical pump that previously met a certain grade under GB 32284-2015 may not necessarily achieve the same grade under GB 19762-2025 Enterprises cannot simply rely on efficiency data old samples but must recalculate according to the new standard. Local quality inspection authorities have also noted in their interpretations of the new standard, under the same energy grade, the new standard demands higher pump efficiency.

IV. Removal of Old Concepts Such as "Target Minimum Allowable Values of Energy Efficiency" "Evaluating Values of Energy Conservation"  
GB 32284-201 included concepts like "target minimum allowable values of energy efficiency" andevaluating values of conservation" in addition to energy efficiency grades and minimum allowable values. GB 19762-2025 adjusts these, removing the target minimum allowable values and evaluating values for petrochemical centrifugal pumps, and emphasizing the management logic of "energy efficiency grades" and "minimum allowable values of energy." This means the new standard focuses more on two aspects: first, whether product meets the minimum energy requirements for market entry or certification; second, which energy efficiency grade the product belongs to and whether it has energy-saving and high-efficiency competitiveness. For enterprises, the standard language is clearer and more convenient for expression in bidding documents, e.g., "The pump efficiency meets the minimum allowable value requirements for the corresponding pump type, flow range, and specified point in GB 19762-2025, with an energy efficiency grade not lower than Level 3."

V. More Systematic Evaluation Methods and Calculation Approaches  
GB 19762-2025 is not a simple replacement of old standards but a re-integration of energy efficiency evaluation methods. The new standard specifies energy efficiency grades, minimum allowable values, calculation methods, and testing methods for centrifugal pumps, covering both clear water centrifugal pumps and petrochemical centrifugal pumps. has a direct impact on pump manufacturers: they cannot rely solely on nameplate efficiency or sample efficiency but consider the specified point efficiency as defined by the standard. In other words, pump energy efficiency judgment typically involves calculations based on specified, specified head, pump type, specific speed range, efficiency corrections, and other factors. Particularly for chemical process pumps, with complex operating conditions, factors such as medium density, viscosity, materials, sealing schemes, and impeller trimming can affect actual operating efficiency However, standard evaluation still returns to pump efficiency under specified test conditions.

VI. Practical Impact on Petrochemical Pump Enterprises  
For petrochemical pump manufacturers, the implementation of GB 19762-2025 primarily brings the following impacts First, standard references in bidding documents need updating. It is no longer appropriate to write "following GB 32284-2015"; after March 1, 2026, it should be changed to "following GB 19762-2025." Second, samples and data sheets need re-verification. Especially for products like API 610 chemical process pumps,2, BB2, BB3, BB4, BB5, etc., if customers require energy efficiency compliance enterprises should reconfirm efficiency grades based on the new standard and cannot simply rely on old energy efficiency conclusions. Third product design needs greater emphasis on hydraulic efficiency. the new standard raising energy efficiency requirements, pump manufacturers must pay more attention to details such as impeller hydraulic models, volute design, wear ring clearances, surface roughness, impeller trimming ranges, and control of bearing and seal friction losses. Fourth, energy efficiency certification needs to be updated. The CQC notice clarifies that products certified under the old standard can apply for conversion to new standard certification certificates, and this conversion must be completed by March 1, 2027. Failure to do so will result in suspension, and if not completed by May 31, 2027, the certificates will be revoked.

VII. Impact on Buyers and Users  
For owners, design institutes, and buyers, the significance of the new standard is also clear. In the future, when writing "energy efficiency not lower than GB 19762-2025" in technical specifications, the default meaning is that the pump efficiency must not be lower than the minimum allowable value specified in the new standard. If a project aims to procure more energy-efficient products, it should further specify "energy efficiency grade not lower than Level 2" or "achieve Level 1 energy efficiency." For continuous operation in chemical, petrochemical, coal, and fine chemical industries, the procurement cost of pumps accounts for only a small portion of the total lifecycle cost, while electricity consumption constitutes the bulk of long-term costs. Therefore, the implementation of GB 197622025 will drive users to shift from "only looking at price" to "considering efficiency, lifespan, and operating costs."

VIII. Conclusion  
Overall, the upgrade from GB 32284-2015 GB 19762-2025 is not merely a change in standard numbering an integrated upgrade of China's centrifugal pump energy efficiency management system. The new standard unifies water centrifugal pumps and petrochemical centrifugal pumps under the same energy efficiency standard, expands the scope of application, removes some transitional concepts from the old standard, raises energy efficiency requirements, and makes certification and market access rules clearer. pump manufacturers, GB 19762-2025 means that product efficiency, sample data, bidding documents, and energy efficiency certification all need to be updated simultaneously. For petrochemical enterprises, future competition will not only involve materials, seals, structures, and prices but will increasingly reflect competition in hydraulic models, manufacturing precision, and energy efficiency grades. Against the backdrop of "dual carbon" goals and industrial energy conservation, high-efficiency centrifugal pumps will become an important development direction in the chemical pump market.

Jiangsu Haifa Machinery Manufacturing Co., Ltd. was restructured from Jiangsu Ligong Group Co., Ltd. (founded in 1958) and the Jingjiang Stainless Steel Pump and Valve Plant of the Central Iron and Steel Research Institute, Ministry of Metallurgical Industry. It mainly produces API 610 chemical process pumps - OH1 pumps, OH2 pumps, OH3 pumps, OH4 pumps, BB1 pumps, BB2 pumps,3, BB4, BB5 double-shell multistage pumps, VS1, VS4, VS5, VS6 barrel casing pumps, HES-type chemical process pumps, chemical pumps, petrochemical pumps, sixth-generation ultra-low carbon stainless steel high-quality leak-proof molten urea pumps, urea hydrolyzer feed pumps, high-temperature asphalt pumps, pitot tube pumps, rotary jet pumps, low-flow high-head pumps, multistage vortex pumps, high-temperature molten salt pumps, high-temperature nitric acid pumps, vertical sump pumps, magnetic drive pumps, low-temperature liquid hydrogen and methanol pumps, high-pressure liquid hydrogen pumps, high-temperature nitric acid magnetic drive pumps, magnetic drive pumps for conveying solid-containing media, industrial pumps, canned motor pumps, slurry pumps, titanium tetrachloride pumps, self-priming pumps, fluoroplastic-lined pumps, sandwich fluoroplastic-lined pumps, leak-proof pumps, desulfurization and denitrification pumps, alkali pumps, pumps, geothermal pumps, oil pumps, axial flow pumps, printing and dyeing pumps, dyeing and finishing pumps, Ti alloy pumps, C-276 material, Hastelloy, 316L material, 347 material, forced circulation pumps, fourth-generation nuclear pumps, nuclear island pumps, special pumps for filter presses, refrigerant pumps, long-shaft vertical sump pumps, CQC Level 1 energy efficiency chemical pumps, high-pressure descaling industrial pumps, and Chinese chemical pumps. www.jslgpump.com  Tel: 13905263417  E-mail: jslgpump@gmail.com  E-mail: jsareva@163.com