QRFS explains the evolution of the modern fire hose, explaining how fire hose liners and jackets were developed to resist abrasion, weathering, and pressure to reliably fight fires.
The Development of Fire Hose – F.F.A.M.
Fire Hose Liners and Jackets: Their History and How They're Made
North American Fire Hose The difference isyour margin of safety.
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Importance of Fire Hose Size
Historical Hoses: A Look Back at Firefighting – Smithsonian Libraries and Archives / Unbound
Choosing a Fire Hose Single Jacket, Double Jacket, or Rubber
Firefighting chemistry, Feature
Fire hose - Wikipedia