Also found in: Acronyms.
random length[′ran·dəm ′leŋkth]
One of a group of various lengths of pipe as delivered by the manufacturer, usually 13-23 feet (4-7 meters) long. Also known as mill length.
mill length, random length
Run-of-the-mill length of pipe, usually 16 ft to 20 ft (approx. 4.9 m to 6 m).
In piping, see mill length.