Black annealing wire is a kind of soft iron wire product made of low carbon steel cold drawing,heating,constant temperature，heat preservation and other processes.Iron wire is used in different ways, and the composition is also different.It contains iron, cobalt,nickel, copper, carbon, zinc, and other elements. Application: Building and fire organizations for black fiber cloth such as silk and silk tie made from high-quality wire,primarily for the construction industry and for tying silk tie lines,20#,21#,22# issue of a wire,producing and also required. Materials: Made by standard low carbon steel wire through the process of wire drawing,acid washing,rust removing and annealing. Feature: It can offer excellent flexibility and plasticity,can be used widely. Tensile Strength:35-70kg/square Coil weight:0.1-800kg/coil Low costs and economy Black iron wire specification:

Wire gauge	SWG(MM)	BWG(MM)	Inch
8#	4.064	4.191	0.165
9#	3.658	3.759	0.148
10#	3.251	3.404	0.134
11#	2.946	3.048	0.120
12#	2.642	2.769	0.109
13#	2.337	2.413	0.095
14#	2.032	2.108	0.083
15#	1.829	1.829	0.072
16#	1.626	1.651	0.065
17#	1.422	1.473	0.058
18#	1.219	1.245	0.049
19#	1.016	1.067	0.042
20#	0.914	0.889	0.035
21#	0.813	0.813	0.032
22#	0.711	0.711	0.028