... or hot-dipped galvanized before. Then the PVC powder go through the high temperature.They are made with the automatic production line .They are ... /2"X1/2"BWG16,17,18,19,20,21,22,23,245/8" x 5/8"BWG16, 17, 18, 19, 20, 21 ... "X2"BWG14,15,16,181-1/2" x 2"BWG14, 15, 16, 17, 183" x 3"BWG12, 13, 14, 15, 16, 172 ... " x 4"BWG12, 13, 14, 164" x 4"BWG12,13, 14Width Available: 0.6M - 15.M ...