The properties of steel depend not only on the chemical composition but also on the metallographic structure. Through the process of heating, holding and cooling to get different metallographic structure and desired property is heat treatment. Common heat treatments include normalizing, quenching, tempering, and annealing. Normalizing treatment: The steel is heated to 30 ° C ~ 50 ° C above the AC3...

For high-pressure piping systems where multiple pumps are used together, the problem of water hammer in the piping system is even more acute. Water hammer is a pressure wave of the ever-changing flow in a pressure pipe, which is a hydraulic shock caused by a pressure rise or fall due to the change in the fluid flow rate in the pressure pipe. Water hammer is the combined result of the inc...

(1) Selection principle of valves for water supply pipelines 1. When the diameter of the pipeline is less than 50mm, a globe valve should be used; When the pipeline diameter is greater than 50mm, gate or butterfly valves should be used; 2. When it is necessary to adjust the flow and water pressure, regulating valves and globe valves should be used; 3. For parts with low water flow resistance (such...

In industrial valve systems, strainers are essential components for ensuring smooth fluid flow and protecting downstream equipment. However, when an oil strainer becomes clogged, it can lead to a series of issues, significantly impacting the system's stability and safety.   Common Causes of Oil Strainer Blockage (1) Excessive Impurities The working medium contains a large amount of particulat...

In seawater piping systems, globe valves can be used to control and isolate fluid flow, provided that the materials and corrosion protection design are suitable for seawater service conditions.   Seawater contains a high concentration of chloride ions and dissolved oxygen. If the valve material is not properly selected, corrosion can occur rapidly. Therefore, when globe valves are used in sea...

Introduction   Globe valves are among the most commonly used isolation valves in industrial piping systems and are widely applied in the oil and gas, chemical processing, power generation, and water treatment industries. Although their design is relatively straightforward, incorrect installation with the flow direction reversed remains a common field issue.   Many operational problems&md...