than 76mm overall diameter and tube wall thickness to be 2.6mm minimum for the line posts and 3.6mm minimum for end and corner post.
Steel cable that meets a K4 for the vehicle entry point that is aligned with a fence line,on either side of the entry,that also has the same level of protection. A K-4 rated fence solution would be able to stop a 15000 lb vehicle traveling at 30 mph.
Installation tools required for fence installation