The basic requirements for a successful pump unit are performance and longevity. Performance is the pump parameters: head, flow and efficiency. Lifetime is the total number of hours that must elapse before one or more parts must be replaced while maintaining permissible performance. Mainly in the actual operating conditions of structural materials to resist corrosion, erosion or a combination of both. There are a number of factors to consider when choosing materials for pump overcurrent components: user experience, expected pump life (eg for short or long term use), intermittent or continuous use, pumping of hazardous or noxious liquids and liquids. Corrosive liquids vary depending on one or more of the following: temperature, concentration, purity, speed, mixed solids and gases. Stainless steel usually refers to the iron content of 12 ~ 30% of the iron-based corrosion resistant alloy. The corrosion resistance of stainless steel is mainly determined by the presence of chromium, iron-chromium dual system is the basis of stainless steel. The addition of other alloying elements can affect and change the alloy's microstructure and properties. Depending on the carbon content, 18% chromium stainless steel can be divided into three categories. Ie ferritic steels less than 0.08% carbon, austenitic-ferritic steels 0.08-0.22% carbon, and austenitic steels greater than 0.22% carbon.
Tartaric acid and sodium gluconate are quite popular set retarders for cement mortar or concrete, and gypsum as well. Industrial grade of products are quite suitable for use in construction applications.
retarding additive for cement,sodium gluconate,industrial grade tartaric acid, grinded fine tartaric acid,efficient set retarder for self-leveling
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