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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

Thrust angular contact ball bearings are available in different designs, including single row, double row, and four-point contact
thrust angular contact ball bearing. Each design has its own advantages and is suitable for different applications. Single row bearings are the most common and are able to support axial loads in one direction. Double row bearings have a higher load carrying capacity and are able to support axial loads in both directions. Four-point contact bearings have a unique design that allows them to support both radial and axial loads simultaneously.
