Plain round elbows, also known as smooth round elbows, are probably the most commonly used elbows and downspouts used with half round galvanized gutter. We offer these smooth round elbows in 3" and 4" diameters in 26 gauge galvanized steel. Galvanized elbows are usually soldered to other downspouts and elbows but can also be riveted or screwed together.
More Info: Flat seam design can occur due to stretching of diameter when forming. This can permit capillary action to cause drips from seam when used in lower position with water flow on seam. This may require sealant or solder to prevent drip.