Is there really a standard for the efficiency of centrifugal pumps?
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GBT13007-2011 Efficiency of centrifugal pumps. Is this standard not being implemented?
GB/T13007-2011 Efficiency of centrifugal pumps – This standard is to be followed
GB/T13007-2011
Unless under specific operating conditions, pump efficiency is not a mandatory requirement; it is only required to follow GB/T13007-2011 in such cases. The data provided in this standard are derived from statistics and are of a general nature rather than being specific, serving as guidelines based on performance tests conducted at the time of manufacture. I’d like to add a few words here: many users, when signing technical agreements or contracts with pump manufacturers, insist on various standards such as API, ISO, and ASME, and they demand that the contract price be the lowest possible. How can pumps be manufactured under such conditions?
Under factory calibration control, if the efficiency is low, investigate the reasons from the aspects of operation and maintenance
It is only fair for clients to have high expectations; since agreements were drawn up based on high standards, those standards should be followed. However, these days many people lack a sense of commitment to contracts, and the poor quality drives out the good, which leads to a poor market situation.