Hot rolled joist steel 1.Standard:AISI, ASTM, DIN, GB, JIS 2.Grade: Q235,16Mn 3.Dimensions:100mm~630mm*68mm~180mm Hot rolled joist steel:1.Standard: AISI, ASTM, DIN, GB, JISGrade: Q235,16MnDimensions: 100mm~630mm*68mm~180mm*4.5mm~17.0mmPlace of Origin: Shandong China (Mainland)Brand Name: FuyuanModel Number: Refer to belowType: HeavyApplication: Steel Structure PlatformAppearance steel: I- ...