... :2#-20# Quick Details Standard:AISI,ASTM,BS,GB, JISDimensions: 25*25mm - 200*200mmGrade: Q195-Q420 SeriesPlace of Origin: China (Mainland) ... Brand Name: ZTModel Number: 2# - 20#Type: EqualApplication: building structure, window & door ... 7863.6363, 4, 56-121.656, 2.163, 2.6544403, 4, 56-121.852, 2.422, 2.9764.5453, 4, 5, 66-122 ...