UPVC Union is made from an unplasticized polyvinyl chloride material that has been precisely developed. These pipe fittings designed to connect two pipes together without the use of a sealant or traditional glued coupling. Union is a type of fitting equipment designed in such a way to unite two pipes which can be detached without causing any deformation. UPVC Union makes the connection of the pipeline simpler and easier to disassemble and replace, which greatly saves the cost of the pipeline connection.