Galvanizing process for medium voltage graded pipe poles

 Galvanizing process for medium voltage graded pipe poles

 Works before the galvanizing process

The interim and final inspection committee reviews the columns before starting the galvanizing process

on the following items:

- Review the dimensions of the total column.

- Reviewing the longitudinal axis of the column and making sure that the column is straight and that all parts are on one straight axis.

- Reviewing assembly work for the three pipes, bushings, cantilevers, and their accessories.

- Review all the welds of the column and make sure that a highly efficient welding material is used, provided that the welds are free of gaps and without a regular shape.

- Good finishing of the column.

- Rashim and sandblasting to remove impurities and oils and remove welding powder.

- Make suitable holes under the upper plate.

Galvanizing process work

- The galvanizing process is carried out after review by the interim and final inspection committee and to ensure the completion of sawing, cutting, perforating, assembling, welding, and grinding, and none of these operations take place after the galvanizing process or any other mechanical operations that affect the safety of galvanizing.

- Cleaning and scaling before performing the galvanizing process, making sure to remove grease, washing with acids and sand, and washing with water.

- The galvanizing process is carried out by the hot immersion method to form a smooth layer of zinc with a uniform thickness that sticks firmly to the surface to be galvanized.

The average thickness of the galvanizing surfaces of the column is 85 microns.

The average thickness of galvanizing for bolts and nuts is 43 microns.

- Galvanizing works are carried out according to the German specification (DIN50976) or any other equivalent specifications.