性能　　超高分子量聚乙烯管经挤出制得，其耐磨性居塑料之冠，并超过某些金属，同时具有优异的耐腐蚀、耐冲击、耐低温、自润滑、不粘性、增水性及流阻小等综合性能。PTFE管材主要技术指标项目Item Unit Test Method Index Value单位Unit测试方法Test Method密度Densityg/cm3GB1033拉伸强度（kg/cm2）Tensile Strength（kg/cm2）MpaGB1040断裂伸长率（%）Breakage Elongation Rate(%)%GB1040简支梁冲击强度Impact Strength of Simple Support BeamKJ/cm2GB1043缺口Notch23℃～40℃20℃液压试验（瞬时爆破环向应力）Hydraulic Test at 20℃(circular stress in instantaneous explosion)MpaSG78-76扁平试验Flattening TestSG78-74线膨胀系数Linear Expansion CoefficientGB1036耐环境应力（F50）Environment-Bearing Stress(F50)hGB1842磨损率（砂浆磨耗主试验法）Wear Rate(main test method of mortar wom-out)%规格公称外径外径偏差0.4Mpa0.6Mpa0.8Mpa1MpaS 偏差S 偏差S 偏差S 偏差25±0.3--2.0 0.42.1 0.450±0.52.0 0.42.6 0.53.4 0.64.2 0.675±0.72.7 0.53.9 0.65.1 0.86.2 0.9110±1.03.9 0.65.7 0.87.5 1.09.1 1.2160±1.55.7 0.88.3 1.110.8 1.313.3 1.6200±1.85.7 0.87.5 1.09.1 1.216.6 1.9250±2.38.8 1.112.9 1.517.0 1.920.7 2.3355±3.212.5 1.518.3 2.123.9 2.429.4 3.2450±4.115.8 2.623.3 3.730.5 4.835.1 4.2630±5.520.5 3.226.4 4.534.3 5.540.1 6.0