black iron wire (materials for construction) 1.Packing: in coil, by spool, cut into sizes for binding/bundle 2. ... T/S: 500~980 N black iron wire (materials for construction) Diameter ... : BWG16, 18#, 19#, 20#, 22#, are the most popular sizes for saleCoil weight:25kgs,50kgs,100kgs,200kgs in normal ...