Method for manufacturing hot-dip galvanized steel sheet

A method for manufacturing a hot-dip galvanized steel sheet, the method comprising subjecting a steel sheet to annealing in a non-oxidizing atmosphere and subsequently subjecting the steel sheet to hot-dip galvanizing, in a continuous annealing furnace, the method optionally comprising subjecting the steel sheet to an alloying treatment after the hot-dip galvanizing, wherein

• the annealing comprises a first step and a second step,
• the first step comprises holding the steel sheet at a temperature of 650° C. or greater and 950° C. or less for a period of 20 s or more and 150 s or less in an atmosphere having a dew point of −55° C. or greater and +20° C. or less and a hydrogen concentration of 5 vol. % or greater and 25 vol. % or less, and
• the second step comprises holding, after the steel sheet undergoes the first step, the steel sheet at a temperature of 700° C. or greater and 950° C. or less for a period of 30 s or more and 300 s or less in an atmosphere having a dew point of −50° C. or greater and +20° C. or less and a hydrogen concentration of 0.2 vol. % or greater and less than 5.0 vol. %.