... roads , Highway ooze and drainage pipe l greening tube. Product Specifications: Diameter mmSG50SG63SG75SG80SG110SG160SG200structure typesinglesinglesinglesingle /doubleSingle/doublesingle/doublesingle/doubleMaterial PE,PP,PVC ... ,PETPE,PP,PVCReference diameter mm41556771100148182Feed water area cm2/m24242424808080Local punched Feed water area cm2 ...