... anti-bump 4.Over 10 years used life Model:industrial gate Material:Alloy-6063, 201# 304# stainless steel ... 5days,20GP:10-18daysWidely useful for:Government, company, factory, industrial, mining enterprises, institutions, colleges, stadium and shopping center, ... gates, university gates, schools gates, buildings gates, houses gates, community parks gates, factories & company gates, Bus stop gates, ...