Definition of busy. busier. ; busiest. 1a : engaged in action : occupied She's busy studying. has enough work to keep him busy for a whileb : being in use found the telephone busy. 2 : full of activity : bustling a busy seaport.
It is considered a high quality tube, and is normally constructed from SAE 1020 or 1026 steel. Note that, technically DOM refers to the process by which the tube is finished after having started as an ERW tube. Technically, DOM is not a type of steel tube, but rather a process. As so often happen though - in common use the term has become accepted to mean a specific type of tubing rather than a process.
A gastrostomy feeding tube is either a tube or a button (skin level device) that is surgically placed into the stomach through the abdominal wall. There are a wide variety of tubes and skin level devices available.