... series 300series 400series. (Standard: ASTM JIS DIN & BS)Diameters: 4mm-300mmSurface : white acid , annealed, black(hot rolled) , bright and following customers ... ,431,410,410S,416,420,420F etc (Standard: ASTM JIS DIN & BS)SIZE: 25*25*2.5mm ~ 150*150*12mm ... flat bar:Grade: 200series 300series 400series. (Standard: ASTM JIS DIN & BS)Finish: Black & Pickled & BrightSize: 19*3 mm-140*12 mmThickness: ...