Posted by Admin on September 29, 2016 4:41 am | Comments Off on What in the World are Riser Clamps? Riser clamps are used to fasten, using the force of gravity, a riser pipe (such as an iron drain pipe) where the pipe travels vertically though a floor or supporting structure. Post navigation « Previous Why Use Stainless Steel Fasters?Next » Reducing what with Reducing Washers?