Features. MPIL has multiple roll forming, bending, off line and online punching stations. We make 2000 MT of purlins every month. We provide C, Z, Sigma purlins in HR, CR, pre galvanized GP up to 550 GSM. Specifically for Module Mounting Solutions for Solar Power Plants, MPIL can also provide Hot Dip Galvanization of purlins up to 80 microns.