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根据国机管 [1999]6 84、6 85、6 86号文批准 ,发布如下标准(标准实施日期 2 0 0 0 - 0 6 - 0 1)JB/ T 51187- 1999 井用潜水电泵 产品质量分等(代替 JB/ T 51187.1~ .3- 94 )JB/ T 512 0 3- 1999 IB型单级离心泵 产品质量分等(代替 JB/ T 512 0 3.1~ .3- 94 )JB/ T 5
According to the National Machinery [1999] No. 6 84,685,686 approved, issued the following standards (Standard Implementation Date 2000 - 0 6 - 0 1) JB / T 51187- 1999 submersible pump used well product quality Grading (instead of JB / T 51187.1 ~ .3- 94) JB / T 512 0 3- 1999 Class IB single-stage centrifugal pump product quality classification (instead of JB / T 512 0 3.1 ~ .3- 94) JB / T 5