facing material as per specification , barbed wire galvanized steel barbed wire type b the barbs shall have four points and shall be formed by twisting two point wires each two turns, tightly around one line wire making all together four complete turns line wire 2.5 mm, point wire 2.5 mm distance between two barbs 75 mm, conforming to is -278-2009 certificate compulsory , galvanised steel chain link fence mesh wire - galvanised steel wire of 3.15 mm diameter fabric size 100x100 mm height-150 cm line wire -2 numbers of line wires of 4.00 mm diameter standard - conforming to is-2721-2003, with up to date amendments. certificate compulsory , galvanised steel chain link fence mesh wire - galvanised steel wire of 4.00 mm diameter fabric size 100x100 mm height-150 cm line wire -2 numbers of line wires of 4.00 mm diameter standard - conforming to is-2721-2003, with up to date amendments. certificate compulsory