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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

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On the other hand, the number 2028 paints a different picture. In this case, it could be interpreted as a reference to a specific bearing series or size. For instance, in the standard ISO system, '63' signifies the series, and '28' would denote the bore diameter For instance, in the standard ISO system, '63' signifies the series, and '28' would denote the bore diameter
For instance, in the standard ISO system, '63' signifies the series, and '28' would denote the bore diameter For instance, in the standard ISO system, '63' signifies the series, and '28' would denote the bore diameter
63 28 bearing. The 6328 bearing would have a bore diameter of 28mm, with the '63' series typically indicating deep groove ball bearings, which are widely used due to their versatility and ability to handle both radial and axial loads.

