Sampling of high carbon ferromanganese to verify relevant knowledge
There are two sampling verification methods for high carbon ferromanganese, and high carbon ferromanganese suppliers will take you to understand:
(1) bulk sampling verification: when the batch is less than 10t, no less than 15 samples should be randomly taken from different parts of high carbon ferromanganese; When the batch is more than 10t and less than 30t, no less than 25 samples should be randomly taken from different parts of high carbon ferromanganese; When the batch is more than 30t, no less than 30 samples should be randomly taken from different parts of high carbon ferromanganese. The weight of each sample shall be approximately equal, and its lumpiness shall not be less than 2020mm. The total amount of high carbon ferromanganese sampling should not be less than 0.03% of the batch. The high carbon ferromangmanganese sample should be all broken to less than 10mm, quartered to 1·2kg, mixed into two equal parts, one for sample preparation for analysis, one for retention.
(2) Package verification sampling: no less than 10% of the packages shall be randomly selected from each batch. In each piece, a piece of high carbon ferromanganese sample with approximately equal weight is randomly taken, and its lumpiness is not less than 2020mm. The total number of high carbon ferromanganese sample shall not be less than 12, or at most 30. The high carbon ferromangmanganese sample should be all broken to less than 10mm, quartered to 1·2kg, mixed into two equal parts, one for sample preparation for analysis, one for retention.
