1.  Black annealed wire comes in the form of coil wire or cut wire. Going through the processing of oxygen free annealing, the iron wire becomes soft and more flexible. It is supplied in reel, coil or cut into certain sizes or in U shape.
2   Material: carbon steel, different DIN, JIS, or other materials are availble.  
3.  Application: Black annealed wire is mainly used as industrial wire, construction wire, industrial tie wire and constructional tie wire, etc.
4.  Tensile strength: 300-1800N/MM2.
5. Package:     
    1. In spools, spool weight from 500g to 500kg. If you want, cartons are also available.  
    2. In coils, coil weight from 5kg to 15kg. Any coil weight is ok, if you insist. 
    3. Your special requirements are welcome.