F4 manufactures fabricated steel flanged dismantling joints in dual sizes, fully rated to PN16, PN25, PN40 and PN60, as well as Class 150, 300, 600 and 900. These critical fittings are designed to connect flanged and spigot pipework, offering a reliable and versatile solution for pipeline systems.

F4 manufactures universal wide-tolerance range mechanical couplings that provide end-load resistant connections between two plain-ended pipes. Suitable for any pipe material, these couplings dynamically restrain axial movement of pipes while also allowing angular deflection before and after installation.

F4 manufactures universal wide-tolerance range mechanical flange adapters that provide end-load resistant connections between plain-ended pipes and flange elements. These adapters are suitable for any pipe material and are designed for easy installation, even on out-of-round pipes.

F4 manufactures stepped mechanical couplings designed to join pipes with different outside diameters (OD). These couplings are ideal for connecting two spigot-end pipes that consist of different materials or diameters. Each fitting is custom-designed and fabricated to meet specific requirements, ensuring a leak-tight seal and secure connection.