Shipbuilding industry faces a never-ending demand for tubes and pipes that carry everything from gas, steam, hydraulic fluid, oil, etc. Each of these pipe assemblies has a different requirement which is why a universal modular jig system is essential to have on hand. Modular fixturing system for welding is now widely used in pipe weldments. There is simple solution: fixture is designed for welding the pipe on flanges. Using functional supporting plate and eccentric block flange can easily be located and fixed. Pipe is supported by V-block on the table or on the cube case.