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The Hongda Concertina is a physical barrier security, laminated so
spiral, which has sharp, sharp, piercing blades.It is very efficient in protecting residential, commercial and industrial areas,and is used in walls, fences, fences, gates, roofs and towers. Furthermore, being made of galvanized steel, the Concertina Hongda is hardly cut by traditional tools.
The Hongda manufactures concertina in various models, as follows.The concertina rolls not clipped have 40 turns and rolls clips
have 58 laps
Model | Blade Type | Barb Length | Barb Width | Barb Spacing | ¢RL | RL |
BTO22 |
| 22mm | 15mm | 34mm | 450 | 10 |
BTO22 | 22mm | 15mm | 34mm | 300 | 8 | |
CBT30 |
| 30mm | 21mm | 42mm | 450 | 10 |
CBT30 | 30mm | 21mm | 42mm | 300 | 8 | |
CBT65 |
| 65mm | 21mm | 100mm | 450 | 10 |
CBT65 | 65mm | 21mm | 100mm | 300 | 8 |
