Code Description Size (mm) Size (Inch) Thick.(mm) 5-5100 - 5-5109 P.P. Pipes 32 1.25" 1.8 5-5110 - 5-5119 P.P. Pipes 40 1.5" 1.8 5-5120 - 5-5129 P.P. Pipes 50 2" 1.8 5-5130 - 5-5139 P.P. Pipes 75 3" 1.9 5-5140 - 5-5149 P.P. Pipes 110 4" 2.7 5-5150 - 5-5159 P.P. Pipes 160 6" --- 5-5200 - 5-5209 P.P. Pipes 32 1.25" 1.8 5-5210 - 5-5219 P.P. Pipes 40 1.5" 1.8 5-5220 - 5-5229 P.P. Pipes 50 2" 1.8