Crowd control barriers with sign display, 1.material:stainless steel 2.with A4 or A3 type sign ... holder 3.fuction:ad,crowd cont Crowd control barriers with ... sign display, 1. Pipe Materials: Titanium Gold and Stainless Steel/ Black Iron;2 ... : 38mm, 51mm or 63mm4. Base cover: Stainless steel, Coniform or flat;5. Ballast base: rubber filling ...