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Galvanization involves coating iron or steel with zinc to prevent rusting. While this treatment extends the life of pipes, it also alters their surface texture. The roughness created by the galvanization process can increase the friction factor compared to smooth-walled pipes. This increase implies greater energy requirements for pumping fluids through galvanized pipes, particularly in systems that rely on water or other low-viscosity fluids.
friction factor of galvanized iron pipe factories

One of the primary functions of black bollards is to prevent vehicles from encroaching on pedestrian zones
. They serve as a barrier that protects pedestrians from potential accidents and enhances safety around busy areas such as parks, shopping districts, and event venues. By clearly delineating spaces for vehicles and pedestrians, bollards help reduce the risk of collisions, thereby promoting a safer urban experience. This function is particularly crucial in crowded cities where pedestrians and vehicles share the same space.black bollards
