... .25, S4/PN1.6, S3.2/PN2.0, S2.5/PN 2.5, S2/PN3.24) According to DIN: 8078 / 80775) ... minimum thermal conductivity5) Lightweight, convenient to transport and handle, good for labor-saving6) Smooth inner walls reduce pressure loss and increase ... steel pipes)8) Light colors and excellent design ensure suitability for both exposed and hiddeninstallation9) Recyclable, environment-friendly, accords with GBM ...