... .Surface Treatment:Galvanized 5.BTO-12,22,30etc Electro galvanized hot dipped galvanizing bto-22 concertina razor barbed wire MaterialStainless steel,hot dipped /electro galvanized iron wireModelBTO-12 ... ,BTO-15,BTO-22,BTO-30,CBT-60,CBT65Coil Diameterfrom 450mm to 980mm outside diamerRazor blade Specification Barbed Tape Wire ...