Industrial polyolefin piping system with improved stiffness, impact strength for use at high service temperature, comprising single- or multilayer pipes, fittings, chambers, valves and vessels, consisting of β-nucleated propylene homopolymers with an IRτ ≥ 0.98 having a tensile modulus ≥ 1500 MPa, a Charpy impact strength, notched, at +23 °C ≥ 30 kJ/m2 and a Vicat B temperature > 90 °C and a Heat Distortion Temperature > 100 °C. The industrial polyolefin piping system is suitable for chemical plant constructions comprising single- or multilayer pipes, fittings, chambers, valves and vessels with improved stiffness, impact strength and high service temperature, preferred for conveyance of natural gas, dangerous liquids and/or toxic liquids.