Recently, the following categories of pump valves in the machinery industry are listed in the Catalogue of Low-level Duplicate Construction of Current Industry by the National Development and Reform Commission of the People's Republic of China: Prohibited Class 41. Type B, BA Type Single-suction cantilever centrifugal pump series 42. F-type single-stage single-suction corrosion-resistant pump series 43. GC type low-pressure boiler feed pump 44. JD long-axis deep well pump 71. Boiler feed pump: DG270-140, DG500-140, DG375-185 72. Thermodynamic steam traps: S15H-16, S19-16, S19-16C, S49H-16, S49-16C, S19H-40, S49H-40, S19H-64, S49H-64 Restriction class 45. New 56-inch and below single-stage medium-opening pump manufacturing projects 46. The new general-purpose water system medium-low pressure carbon steel valve manufacturing project also states that the items that have not been marked for elimination are immediately eliminated; the production scale is larger than the limit category, but For projects that do not meet the environmental protection targets, investment is prohibited.
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