Apr 14, 2020 · Each SDR has rresponding nominal pressure rating which are PN 20, PN 16, PN 12.5, PN10, PN 8 and PN 6. All the prices listed are in Philippine Peso (Php) with value added tax (VAT) included. The mmon standard cut length of the pipe are 6 meters for larger sizes and 50 / 60 meters for smaller ones.