The Chandler Company 
Concrete barriers may shatter in the event of explosion, with shards of concrete becoming deadly projectiles. Encasing or jacketing these concrete planters in a decorative skin of FRP (fiberglass reinforced plastic) composite could help to contain/deflect blast energy while minimizing dangerous blast by-products. Fiberglass planters installed over bollards increases the penetration resistance from vehicles and overturning.
Faddis Concrete Products
Primarily Eastern Time Zone
Faddis has been a leader and innovator in the concrete products business since 1947. Standard and custom designed perimeter security products include: Traffic safety barriers, perennial planters, Department of State K12/L3 pre-cast bollards, ballistic resistant perimeter walls, and explosion barricades.
Petersen Manufacturing Co.
Petersen Manufacturing concrete security barriers can provide the strength, flexibility and aesthetic values needed in precast barriers. Choose from many styles of planters, bollards, and benches. Finish options include many colors, LSB and exposed aggregate textures. Custom specifications are welcome, call for details.
Tymetal Corp. 
Manufacturing perimeter security gate and electric gate operator systems for Industrial and Correctional markets. Featured products include: Fortified Impact Gate System - USDOS certified crash barrier, TIGER Automatic Gate Systems – complete system tested over 200,000 cycles. Shipping Cantilever, Swing, Vertical Lift, Roller or Overhead automatic gate systems (aluminum, steel, ornamental, or chain-link) nationwide since 1985.
Wausau Tile
Security buffer zone bollards can be engineered to meet the K-4, K-8, and K-12 crash ratings, and are used for force protection, perimeter security, and traffic control at government buildings, military installations, stadiums, malls, and parks. Choose colors, shapes, sizes, and finishes, with certain designs featuring lights and audio speakers.
4specs Discussion Forum - Great place to ask questions about specifications, products and technical data. Free - no registration required to read or post (subject to moderation).
See also:
32 1600 - Vehicle and Traffic Barriers - for general traffic barriers
32 3140 - High Security Fences and Gates
32 4100 - Bollards - for lower security bollards
The Chandler Company
Concrete barriers may shatter in the event of explosion, with shards of concrete becoming deadly projectiles. Encasing or jacketing these concrete planters in a decorative skin of FRP (fiberglass reinforced plastic) composite could help to contain/deflect blast energy while minimizing dangerous blast by-products. Fiberglass planters installed over bollards increases the penetration resistance from vehicles and overturning.
Faddis Concrete Products
Primarily Eastern Time Zone
Faddis has been a leader and innovator in the concrete products business since 1947. Standard and custom designed perimeter security products include: Traffic safety barriers, perennial planters, Department of State K12/L3 pre-cast bollards, ballistic resistant perimeter walls, and explosion barricades.
Petersen Manufacturing Co.
Petersen Manufacturing concrete security barriers can provide the strength, flexibility and aesthetic values needed in precast barriers. Choose from many styles of planters, bollards, and benches. Finish options include many colors, LSB and exposed aggregate textures. Custom specifications are welcome, call for details.
Tymetal Corp.
Manufacturing perimeter security gate and electric gate operator systems for Industrial and Correctional markets. Featured products include: Fortified Impact Gate System - USDOS certified crash barrier, TIGER Automatic Gate Systems – complete system tested over 200,000 cycles. Shipping Cantilever, Swing, Vertical Lift, Roller or Overhead automatic gate systems (aluminum, steel, ornamental, or chain-link) nationwide since 1985.
Wausau Tile
Security buffer zone bollards can be engineered to meet the K-4, K-8, and K-12 crash ratings, and are used for force protection, perimeter security, and traffic control at government buildings, military installations, stadiums, malls, and parks. Choose colors, shapes, sizes, and finishes, with certain designs featuring lights and audio speakers.