52. What are the potential issues caused by insufficient drying of steel pipes?

When steel pipes are dried after being coated with solvent aqueous solutions, if they fail to reach the required drying temperature for hot-dip galvanizing and retain excessive moisture, this constitutes undried steel pipes. The consequences of undried pipes primarily include: (1) Failure to fully remove hydrogen generated during acid pickling from the metal substrate, compromising galvanized layer quality; (2) Induced corrosion of the metal substrate producing ferric chloride, increasing zinc consumption and resulting in rough galvanized surfaces; (3) Aluminum components in molten zinc undergoing intense oxidation due to moisture, generating excessive aluminum oxide (Al₂O₃) that wastes aluminum and accelerates solvent degradation; (4) Moisture rapidly converting into steam, hydrogen, and oxygen upon contact with molten zinc, causing explosive ejection of zinc liquid through exposed pipe ends (a hazardous phenomenon), which wastes zinc and creates mottled coating; (5) Steam generated from moisture reacting with molten zinc at 350℃ intensifies zinc oxidation, exacerbated by the molten zinc's operational temperature range of 470-500℃, ultimately increasing zinc consumption and degrading galvanized layer quality.