What is the function of neck in drill pipe?

Roughnecks frequently had to apply floor wipers and high pressure water gun to clean and maintain the drillfloor from mudspills.

Kelly hose - a flexible, high-pressure hose that connects the standpipe to the kelly (or more specifically to the gooseneck on the swivel above the kelly) and allows free vertical movement of the kelly, while facilitating the flow of the drilling fluid

through the system and down the drill string.

Goose-neck - thick metal elbows connected to the swivel and standpipe that

supports the weight of and provides a downward angle for the kelly hose to hang

from.