Both removable gooseneck trailers and folding gooseneck trailers are types of low-bed semi-trailers used for hauling heavy equipment and materials. The main difference between these two types of trailers is how the gooseneck is connected to the trailer.
A removable gooseneck trailer, as the name suggests, has a gooseneck that can be detached from the trailer for loading and unloading. The gooseneck is typically attached to the trailer using a series of pins and hydraulic cylinders. This allows for easy loading and unloading of heavy equipment and machinery onto the trailer, as the gooseneck can be removed to create a low loading angle.
On the other hand, a folding gooseneck trailer has a gooseneck that folds down onto the trailer deck. The folding mechanism usually involves a hydraulic cylinder and a hinge point that allows the gooseneck to fold and unfold. The main advantage of a folding gooseneck trailer is that it can be used as a flatbed trailer when the gooseneck is folded down, which can be useful for hauling oversized loads that cannot be transported on a standard trailer.
In summary, the main difference between detached gooseneck trailers and folding gooseneck trailers is the way the gooseneck is connected to the trailer. Detachable neck gooseneck trailers have a gooseneck that can be detached from the trailer while folding gooseneck trailers have a gooseneck that folds down onto the trailer deck.