Piping tunnel in a German power plant, sealed with a cross barrier made of firestop mortar.
Piping of a boiling room
How not to fit a drainpipe
Tarred wood wrapped with steel, Cougar Mountain Regional Wildland Park
Polyethylene gas main
Roman lead pipe with folded seam
Firestops being installed at Nortown Casitas, North York (Now Toronto), Ontario, Canada
Steel Gas Pipe and Copper Water Pipe firestops.
White Pipe Through-Penetration Firestop