| Item No. | CONSTRUCTION | Raw Materials | Dimension | Physical and Chemical Properties |
| Materials | Diameter (D/d) | Color Options | Inner Surface | Melt Fow Index | Density | Tensile Strength At Yield | Elongation At The Break | Environmental Stress Crack Resist (F50) | Outer Dia. (mm) | Wall Thickness (mm) | Ovality (%, before coiled) | Hardness of Outer Wall (Shore-D) | Internal Co-efficient of Friction | Tensile Strength at Yield | Elongation at Break | Max Pulling Load | Bending Radius After Cooling | Ring Stiffness | Longitudinal Reversion | Air Pressure |
| DW-SD2720 | HDPE (High-density Polyethylene) | 27.0mm/20.0mm | Fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 27.0 (-0.0, +0.3) | 3.50 (-0.2, +0.20) | ≤5 | ≥59 | ≤0.12 | ≥21MPa | ≥500% | ≥4500N | 560mm | ≥30kN/m2 | ≤3.0% | 1.6MPa |
| DW-SD2824 | HDPE (High-density Polyethylene) | 28.0mm/24.0mm | Fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 28.0 (-0.0, +0.3) | 2.00 (-0.2, +0.20) | ≤7 | ≥59 | ≤0.12 | ≥21MPa | ≥500% | ≥2800N | 560mm | ≥30kN/m2 | ≤3.0% | 1.6MPa |
| DW-SD3225 | HDPE (High-density Polyethylene) | 32.0mm/25.0mm | Black or fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 32.0 (-0.0, +0.3) | 3.50 (-0.2, +0.20) | ≤5 | ≥59 | ≤0.12 | ≥21MPa | ≥380% | ≥5000N | 300mm | ≥40kN/m2 | ≤3.0% | 1.6MPa |
| DW-SD3226 | HDPE (High-density Polyethylene) | 32.0mm/26.0mm | Fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 32.0 (-0.0, +0.3) | 3.00 (-0.2, +0.20) | ≤5 | ≥59 | ≤0.12 | ≥21MPa | ≥380% | ≥5000N | 300mm | ≥40kN/m2 | ≤3.0% | 1.6MPa |
| DW-SD3227 | HDPE (High-density Polyethylene) | 32.0mm/27.0mm | Fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 32.0 (-0.0, +0.3) | 2.50 (-0.2, +0.20) | ≤5 | ≥59 | ≤0.12 | ≥21MPa | ≥380% | ≥4000N | 300mm | ≥30kN/m2 | ≤3.0% | 1.6MPa |
| DW-SD3228 | HDPE (High-density Polyethylene) | 32.0mm/28.0mm | Fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 32.0 (-0.0, +0.3) | 2.10 (-0.2, +0.20) | ≤7 | ≥59 | ≤0.12 | ≥21MPa | ≥380% | ≥3000N | 400mm | ≥50kN/m2 | ≤3.0% | 1.2MPa |
| DW-SD3326 | HDPE (High-density Polyethylene) | 33.0mm/26.0mm | Fully colored | Smooth with Silicon or Inner Ribs with Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 33.0 (-0.0, +0.3) | 3.50 (-0.2, +0.20) | ≤5 | ≥59 | ≤0.12 | ≥21MPa | ≥380% | ≥5000N | 300mm | ≥40kN/m2 | ≤3.0% | 1.6MPa |
| DW-SD3832 | HDPE (High-density Polyethylene) | 38.0mm/32.0mm | Fully colored | Smooth | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 38.0 (-0.0, +0.3) | 3.00 (-0.2, +0.20) | ≤7 | ≥59 | ≤0.12 | ≥21MPa | ≥400% | ≥6000N | 440mm | ≥30kN/m2 | ≤3.0% | 1.6MPa |
| DW-SD4032-RIBS | HDPE (High-density Polyethylene) | 40.0mm/32.0mm | Fully colored | Inner Ribs with Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 40.0 (-0.0, +0.4) | 4.00 (-0.00, +0.35) | ≤5 | ≥59 | ≤0.08 | ≥21MPa | ≥500% | ≥8500N | 480mm | ≥50kN/m2 | ≤3.0% | 2.5MPa |
| DW-SD4032 | HDPE (High-density Polyethylene) | 40.0mm/32.0mm | Fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 40.0 (-0.0, +0.4) | 4.00 (-0.00, +0.35) | ≤5 | ≥59 | ≤0.08 | ≥21MPa | ≥500% | ≥8500N | 480mm | ≥50kN/m2 | ≤3.0% | 2.5MPa |
| DW-SD4033 | HDPE (High-density Polyethylene) | 40.0mm/33.0mm | Fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 40.0 (-0.0, +0.3) | 3.50 (-0.2, +0.20) | ≤5 | ≥59 | ≤0.12 (Dynamic) ≤0.25 (static) | ≥21MPa | ≥500% | ≥8000N | 400mm | ≥50kN/m2 | ≤3.0% | 1.6MPa |
| DW-SD4034 | HDPE (High-density Polyethylene) | 40.0mm/34.0mm | Fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 40.0 (-0.0, +0.3) | 3.50 (-0.2, +0.20) | ≤5 | ≥59 | ≤0.12 | ≥21MPa | ≥380% | ≥6000N | 400mm | ≥30kN/m2 | ≤3.0% | 1.6MPa |
| DW-SD4035 | HDPE (High-density Polyethylene) | 40.0mm/35.0mm | Fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 40.0 (-0.0, +0.3) | 3.50 (-0.1, +0.20) | ≤10 | ≥59 | ≤0.12 | ≥21MPa | ≥380% | ≥3000N | 500mm | ≥20kN/m2 | ≤3.0% | 1.2MPa |
| DW-SD4233 | HDPE (High-density Polyethylene) | 42.0mm/33.0mm | Fully colored | Inner Ribs with Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 42.0 (-0.0, +0.4) | 3.85 (-0.00, +0.30) | ≤7 | ≥59 | ≤0.1 | ≥21MPa | ≥500% | ≥12000N | 800mm | ≥30kN/m2 | ≤3.0% | 2.5MPa |
| DW-SD4236-RIBS | HDPE (High-density Polyethylene) | 42.0mm/36.0mm | Fully colored | Inner Ribs with Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 42.0 (-0.0, +0.4) | 3.00 (-0.00, +0.30) | ≤7 | ≥59 | ≤0.1 | ≥21MPa | ≥500% | ≥8000N | 500mm | ≥30kN/m2 | ≤3.0% | 2.5MPa |
| DW-SD4638 | HDPE (High-density Polyethylene) | 46.0mm/38.0mm | Fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 46.0 (-0.0, +0.3) | 4.00 (-0.20, +0.20) | ≤5 | ≥59 | ≤0.12 | ≥21MPa | ≥380% | ≥10000N | 1000mm | ≥30kN/m2 | ≤3.0% | 1.6MPa |
| DW-SD5041 | HDPE (High-density Polyethylene) | 50.0mm/41.0mm | Fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 50.0 (-0.0, +0.4) | 4.50 (-0.30, +0.30) | ≤7 | ≥59 | ≤0.12 | ≥21MPa | ≥380% | ≥12000N | 1000mm | ≥30kN/m2 | ≤3.0% | 1.6MPa |
| DW-SD5042-RIBS | HDPE (High-density Polyethylene) | 50.0mm/42.0mm | Black or Customized | Inner Ribs with Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 50.0 (-0.0, +0.4) | 4.00 (-0.20, +0.20) | ≤7 | ≥59 | ≤0.1 | ≥21MPa | ≥400% | ≥12000N | 600mm | ≥30kN/m2 | ≤3.0% | 2.5MPa |
| DW-SD5042 | HDPE (High-density Polyethylene) | 50.0mm/42.0mm | Fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 50.0 (-0.0, +0.4) | 4.00 (-0.30, +0.30) | ≤7 | ≥59 | ≤0.12 | ≥21MPa | ≥400% | ≥12000N | 1000mm | ≥30kN/m2 | ≤3.0% | 1.6MPa |
| DW-SD5043 | HDPE (High-density Polyethylene) | 50.0mm/43.0mm | Fully colored | Smooth With Silicon | 0.1～ 0.3 g/10 minutes (190 C , 2.16KG) | Min. 0.940 g/cm3 | Min. 21MPa | Min 350% | Min. 350 hours | 50.0 (-0.0, +0.4) | 3.50 (-0.1, +0.25) | ≤7 | ≥59 |
HDPE Silicon Duct is a kind of communication optical (electric) cable protecting tubing, which is produced and shaped through extruding synchronistically the silicon-core material with low friction coefficient inside HDPE pipe. Thus the HDPE silicon-core pipe provides the convenience for the cable lying because of the lubricating solid tunnel with durability and lower frication coefficient. It becomes the most advanced optical cable protection in the world at present. Its advancement is presented on the replacement of cable personal pulling. The cable-blowing machine will blow the cable into the lower friction HDPE pipe and the cable goes forward at high speed in the suspension state. This cable laying way avoids the cable damages caused by the pulling. For that, the accidental signal loss caused by machine pulling has been reduced greatly and the too many knots resulted from the pulling length limitation has been decreased greatly. At the same time, the well digging quantities have been minimized and the project cost has been saved. The HDPE Silicon Duct has the high intensity, excellent property resisting high or low temperature, adaptability for steepness and bending changes. Advantages: 
