Industrial drain connectors are ideal for connecting roof membranes and drains in industrial applications. The tapered tang facilitates installation in rainwater pipes, guaranteeing a long-lasting seal and high resistance to weathering. Industrial drain connectors are used to connect roof membranes with rainwater drains. The slightly conical-shaped tang facilitates installation in rainwater pipes. The particular length of the tang extends their fields of application, making them perfect for industrial uses when long lengths have to be connected. The elastic material from which they are produced guarantees a long-lasting seal. Knurling at the top of the tang ensures a perfect attachment of the Leaf-Excluders and Gravel-Excluder to the drain connector.