定义HDPE单壁波纹管是以高密度聚乙烯(HDPE)树脂为主要原料,经挤出成型工艺制成的具有环形波纹外壁和光滑内壁的新型塑料管材。其波纹结构赋予管道独特的机械性能,同时保留 HDPE 材料的耐腐蚀性和耐化学性。2、结构特点外壁:呈规则的环形波纹形式,增强了管材的环刚度(外压阻力),减少了材料用量,提高了结构强度。内壁:光滑平整,水流阻力小,输送效率高。连接方式:通常采用承插弹性密封连接或热缩带连接,施工方便,密封性好。二、性能特点1.优异的机械性能高环刚度:波纹结构使管道能够承受较大的外部压力(如土荷载、地面车辆荷载),环刚度等级通常为 SN4、SN8、SN12.5、SN16(单位:kN/m²),适用于不同埋深和荷载要求的场景。柔韧性好:管材可适度弯曲,以适应地基的不均匀沉降,降低地质变形造成管道破裂的风险。2、耐腐蚀性和耐老化性强 化学稳定性强:HDPE材料对酸、碱、盐等化学品具有优异的耐腐蚀性,适用于输送腐蚀性液体或掩埋在腐蚀性土壤中。耐候性好:抗紫外线能力强,正常使用寿命可达50年以上,无需频繁维护。3、优越的流体性能内壁光滑:粗糙度系数(N值)仅为0.009-0.010,远低于混凝土管(N=0.013-0.014),在相同管径速较大,不易堵塞。耐磨性…

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