What is the difference between equipment flange and pipe flange?

What is the difference between equipment flange and pipe flange?
 

The container flange is called container flange on the container, equipment flange on the equipment, pipe flange on the pipe, and accessory pipe flange on the valve pipe fitting. This is a common term for each industry. There is no such two names in the standard book.
 

Equipment flange refers to the flange on which the equipment cylinder or equipment head is connected on the equipment housing. The flange of the equipment can be made of HG20592 ~ HG20634 steel pipe flanges, or container flanges.
 

The container flange refers to the flange of JB4701 ~ JB4703, JB / T4721 refers to the side flange of the pipe box, the flange of the hook flange, and the flange of the floating head flange are generally used only for the equipment flange.
 

Specially used on the equipment are: take over flange, manhole flange, hand hole flange, handle hole flange, mirror flange, eight-character blind flange and so on.
 

Steel pipe flanges:. Welded flanges, flat welded flanges, flanges with flat welded flanges, blind flanges, loose flanges are generally used on pipelines but are also used as equipment flanges on equipment, generally lower pressures, equipment When DN ≤ 400, the cylinder is mostly seamless steel pipe.