"welcome remarks" is correct and can be used in written English.
You might use it to refer to the introductory statement given at an event, such as a graduation ceremony or a conference. For example, "At the beginning of the ceremony, the principal gave a few welcome remarks to the assembled guests."
Welcome remarks by Saskia Sassen, Robert S. Lynd Professor of Sociology and CGT Member.
Welcome remarks by David K. Park, Dean of Strategic Initiatives for the Arts & Sciences; Member of the Committee on Global Thought, Columbia University.
May's government, following her welcome remarks last week, should explain in detail why the Pfizer and SoftBank proposals are different in character.
Dean Lloyd Minor, MD, will deliver welcome remarks; and Paul Berg, PhD, a world-renowned biochemist, Nobel laureate, educator and advocate for scientific freedom, will deliver the keynote address.
Andrea Califano, Dr., chair of the department, opened the day's sessions with welcome remarks, as the retreat also served as a site visit by the National Cancer Institute for the Columbia University Center for Cancer Systems Therapeutics (CaST).
Welcome remarks by Vishakha N. Desai, Senior Advisor for Global Affairs to the President; Senior Research Scholar, School of International and Public Affairs; Member of the Committee on Global Thought, Columbia University.
But he should welcome the remarks of Brigadier Mark Cabouton-Smith aBritishitistrategyegy as a cue for a reality check.
I do not welcome unsolicited remarks about my body from someone I don't know and who, in a professional context, is in a position of authority over me.
"We welcome the remarks by the first minister as a positive step.
We welcome the remarks of van Tongeren and Cherrie regarding our recent editorial (Lioy and Rappaport 2011) and see no particular differences in our positions.
The leadership welcomed his remarks on Corbyn.
