Razor Wire Concertina (HARPOON profile) 

Concertina 

12", 14", 15", 16", 18", 24", 30" 

Birmingham Barbed Tape Ltd. Produces the above (depending on the size of the coil) in options of 3, 5, 7 or 9 clips. 

Options of 31, 33, 51 and 56 spirals are available or alternatively, any spiral number the client requires to create a unique product to the buyer's need. 

Again, these sizes and spiral options are available in either stainless steel strip over stainless steel core wire (see steel specification attached). Stainless steel strip over galvanised core wire of the least cost option of galvanised strip over galvanised core wire. 

Double Concertina 

30"/24" 
Standard 31 loop reinforced stainless steel of galvanised steel cold clinched around galvanised steel or stainless steel reinforcing wire (see specification attached). 

Each cluster of barbs to be four needle sharp barbs on 4" centres, each barb to measure 2, 4" in length. 

Adjacent coil loops shall be alternatively clipped together and attached at 3 points of approximate equal spacing around the coil diameter. Length 20' per roll.

coil diameter	450mm (18 in)	730mm (28 in)	730mm (28 in)	980mm (36 in)	980 mm (36 in)	1250mm (50 in)
recommended stretch length	10 m	10 - 12 m	15 -20 m	10-15 m	8 m	8 m
coil diameter when stretched	400mm	620mm	600mm	820mm	850mm	1150mm
Spiral turns per coil	54/55	54/55	54/55	54/55	54/55	54/55
clips per spiral	3	5	3	5	7	9