'deadlines for submitting' is grammatically correct and can be used in written English.
Example: The company has set strict deadlines for submitting project proposals.
What are the deadlines for submitting a waiver?
Deadlines for submitting work may differ for courses that do not follow the full academic calendar.
Deadlines for submitting independent major proposals are listed on the calendar supplement for the College of Arts and Sciences.
Deadlines for submitting proposals are announced at the beginning of each academic year by the Director of Graduate Studies.
Operationally, magazines now offer advertisers opportunities they could not in the last recession, particularly what is called a faster close -- that is, later deadlines for submitting ads before publication, made possible by the greater computerization of publishing.
Those who were applying to the country's most selective colleges faced deadlines for submitting their applications at the end of December, and many had to corner their teachers on the picket line to get the letters.
