High:1.5m Width:3m Inner pipe diameter:19mm Outer pipe diameter:22mm Surface treatment:Hot galvanized Our crowd control barriers systems can quickly and easily be installed,without the need to disturb the surface area by digging holes or laying foundations.The barriers ofen used to the city road,pool,garden fence etc.finish of surface:Hot galvanized,Electro galvanized,PVC coating,PVC spraying.