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The main physical and mechanical properties No. Item MPP power management requirements of the physical properties of MPP test tube method Density g / cm3 0.91-0.96 GB1033-86 2 sliding friction coefficient of <0.35 <> <0.35 <> <0.35 <> <0.35 <> GB / T3960-89 3 Tensile strength (23 ± 2) ℃ Mpa tensile strength (70 ± 2) ℃ ≥24.0 ≥18.0 GB / T1040-92 4 weld tensile strength (23 ± 2) ℃ Mpa ≥21.6 GB / T1040- 925 flexural strength (23 ± 2) ℃ Mpa ≥37.0 GB / T9341-2000 6 flexural modulus Mpa 1000-1200 GB / T9341-2000 7 flat test (diameter of 1/2, -5 ℃) is not broken GB9647 -888 Vicat heat (10N, 50 ℃ / h) ℃ ≥120 GB / T1633-2000 9 roundness mm 3.6-5.0 GB / T13633-2000 10 minimum permissible bending radius m ≤75D 11 materials characterization modified poly propylene MPP ASTME168-99 12 drop hammer impact test (-5 ℃ / 8h, R20) D> 160,10kg * 2m D≤160,6kg * 2m D≤125,5kg * 2m 9/10 does not break GB / T6112-1985 a, MPP power tubes Products: MPP power tube using a modified polypropylene as the main raw material, is without a lot of dredging, excavation and destruction of roads, roads, railways, buildings, and other special section of riverbed under laying pipes, cables, etc. construction projects. Compared with the traditional "Trench pipe Law", trenchless pipe project more power to meet the current environmental requirements, because the removal of dust flying caused by traditional construction, traffic congestion and other disturbing factors, this technology can also even in some implementation of the excavation area laying pipelines, such as monuments protected areas, downtown, crops and farmland protection areas, highways and rivers. High-temperature, pressure-resistant, suitable for high voltage transmission lines 10KV cable discharge pipe above the pipe. 110mm ~ in 250mm, divided into common type and enhanced. Common type suitable for trenchless laying trenchless construction and depth through the construction of the project is less than 4M; enhanced through the construction applicable to non-excavation depth is greater than 4M project. The product through the National Chemical Building Materials Test Center, and achieved good social and economic benefits. Two, MPP power management Scope: MPP power tube can be widely used in municipal, telecommunications, electricity, gas, water, heat and other pipeline projects. MPP trenchless pipe horizontal directional drilling of urban and rural electricity power discharge pipe project, and next excavation electricity discharge pipe project. MPP trenchless pipe horizontal directional drilling of urban and rural electricity water sewage discharge pipe project. Industrial wastewater engineering.