What are the key differences between Pre-Galvanized and Hot-Dip Galvanized (HDG) finishes?

Pre-galvanized trunking is manufactured from steel sheets that are coated at the mill, offering a smooth finish suitable for indoor, dry environments. Hot-dip galvanizing involves immersing the finished product in molten zinc, creating a thicker, more robust metallurgical bond that is essential for the international market’s heavy-duty infrastructure and coastal projects where humidity is high.