Gas Piping Installers License – Days Classes are held on Tuesdays and Wednesdays from 8 AM to 4 PM. Classroom only. Upcoming Courses November 29 to December 21 January 10 to February 1, 2023 March 28 to April 19, 2023 May 30 to June 21, 2023 Materials $1,400 (November 29 to December 21, 2022) $1,400 (January 10 to February 1, 2023) $1,400 (March 28 to April 19, 2023) $1,400 (May 30 to June 21, 2023) Enroll Success!