... Q345 SS400 16Mn 20#, etc 2.Side Length:12-110mm 3.Wall Thickness:0.8-9mm 4.Length:5.8-12m ... , Q235, SS400,20#, 45#, etcLow Alloy: Q345, 16Mn, Q390, ST52-3, etcSide Length12-110mmWall Thickness0.8-9mmLength5.8-12mWeight0.275-27 ... Shangyi Metal Structure Trade Co. LtdAddressA1905 of Future Plaza, No 103, Weidi Road, Hexi District, Tianjin, ChinaWebsitetjshangyijinshu.en.alibaba.comtjtwt.en ...