HDPE Drainage Pipe Specifications DN(mm) Wall Thickness SN2 SDR33 SN4 SDR26 SN8 SDR21 Min Max Min Max Min Max 110 â?? â?? 4.2 4.9 5.3 6.1 125 â?? â?? 4.8 5.5 6.0 6.9 160 4.9 5.6 6.2 7.1 7.7 8.7 200 6.2 7.1 7.7 8.7 9.6 10.8 250 7.7 8.7 9.6 10.8 11.9 13.3 315 9.7 10.9 12.1 13.6 15.0 16.8 355 10.9 12.2 13.6 15.2 16.9 19.7 400 12.3 13.8 15.3 17.1 19.1 22.2 450 13.8 15.4 17.2 20.0 21.5 24.8 500 15.3 17.1 19.1 22.2 23.9 27.4 630 19.3 22.5 24.1 28.0 30.0 34.7 800 24.5 28.4 30.6 35.4 38.1 44.1 1000 30.6 35.4 38.2 44.2 47.7 55.1 1200 36.7 42.4 45.9 53.0 57.2 66.0 1400 42.9 49.6 53.5 61.8 66.7 73.5 1600 49.0 56.6 61.2 70.6 76.2 84.0 1800 54.5 60.1 69.1 76.2 85.7 94.4 2000 60.6 66.8 76.9 84.7 95.2 104.9 Properties Characteristics Requirements Test Parameters Test Method Ring Stiffness SDR33:â?¥2KN/m2 SDR26:â?¥4KN/m2 SDR21:â?¥8KN/m2 Test temperature Deflection Deflection speed for 110mmï¼?DNâ?¤200mm 200mmï¼?DNâ?¤400mm 400mmï¼?DNâ?¤800mm DNï¼?800mm Tolerance on test speed (23±2)â?? 3% 5mm/min 10mm/min 20mm/min 0.03diamm/min ±5% ISO9969 Tengyuan can supply municipal engineering pipe, dredging engineering pipe, HDPE Gas Pipe, Power Engineering Pipe, Mining Pipe and agriculture irrigation pipe, etc. Integrity is the foundation of us, as well as the guarantee for enterprise's sustainable development. Features: 1.Non-toxic.The HDPE material is non-toxic and tasteless. It belongs to green building materials and never scaling through the strict health test, which can effectively improve the water quality. 2.Low flow resistance. The Smooth inner wall is easy for pipeline transportation .Under the same condition, HDPE pipeâ??s delivery capacity can be increased by 30%, as its roughness is much less than that of steel pipe and glass reinforced pipe. 3. No Leakage. HDPE pipe is connected in the ways of butt fusion, socket fusion and electrofusion, which means the strength of joint point is higher than tube itself . 4. Excellent Flexibility. HDPE pipes could be coiled for the small diameter products. Also, it could be slightly bended for the large diameter products, which will be much more convenient in the construction site. 5.Good resistance ability for scratch. HDPE pipe is 4 times the wear resistance of steel pipe, which means HDPE pipe has longer service life and better economical efficiency. 6.Convenient for construction. PE pipe could be installed in a variety of trenchless ways, so it is very convenient for construction and installation. 7.Long life-span. Designed 50 yearsâ?? service life under rated temperature and pressure.