... SS400 16Mn 20#, etc 2.Side Length:12-110mm 3.Wall Thickness:0.8-9mm 4.Length:5.8-12m ... , SS400,20#, 45#, etcLow Alloy: Q345, 16Mn, Q390, ST52-3, etcSide Length12-110mmWall Thickness0.8-9mmLength5.8-12mWeight0.275-27 ... manufacturing, steel structure engineering;b.) Electric power engineering, power plant, agricultural and chemical machinery; c.) Shipbuilding, highway, rail car, decoration;d.) Special ...