Abstract: Based on the mathematical equation of the flow characteristics of the control valve, the formulas for calculating the flow cross-sectional area of ​​the linear and equal percentage type control valves are derived. The problems existing in the design of the valve shape of…

The 273 unit seamless steel pipe production project developed by Jinan Heavy Industry Co., Ltd., which is of significance to the seamless steel pipe industry in China, was officially rolled out of the pipeline. The perforated red steel pipe was pierced, rolled, sizing, and straightened. The fo…

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As long as people have a little understanding of the car, they should know that the most important part of a car is the chassis. The same is true for concrete mixers. The chassis of the concrete mixer directly determines the service life of the …

On October 18, the signing ceremony for the cooperation agreement on assets reorganization between China National Chemical Industry Group and Chenzhou Dahua Group was held in Dahua, Cangzhou. China National Chemical Corporation will increase its capital by 417 million yuan to control 51% of th…

Warehouse-specialized transport car specialized goods box/staketruck
The utility model is equipped with a cage type cage or a fence type structure carriage, and a grid is installed inside the storage cage or the fence at a certain distance for tran…

During the slack season, the submersible pumps should be properly conserved to prolong their service life and ensure normal use during busy hours:
1, check wearing parts: submersible pump impeller, buckle, sleeve, bearing seat and so on are wearing parts. First of all the pump should b…