U type wire: 1.galvanized wire black wire steel wire 2.application:widely used in architecture,greenhouse,wring wire. U type wire1. Raw material: hot dipped galvanized wire, electro galvanized wire, black wire etc.2.U type iron wire is made from galvanized wire, electro galvanized or hot-dip galvanized or black iron wire. 3.Application: widely used in architecture, greenhouse, wringing wire etc.