1/2' cement hose large inside diameter
1-1/2″ pipe size flanges have an opening to fit over 1.90″ OD — the actual outside diameter of 1-1/2″ pipe. 1-1/2″ tubing has a true 1.50″ outside diameter. The above shows the difference between a 1-1/2″ pipe flange and a 1-1/2″ tube flange.
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