... JIS SS 4002.Application: concrete,spun,phc pile 3.Size:600*400*18mm or customized4.Technique:hot rolling 5.Advantages: ... steel Q235 or JIS SS 400OD(MM)300,400,500,550,600,700,800,1000 or 1200mm etc (Also Acceptable Custom)ID(MM)180 ... Custom)TechniqueHot Rolling Specifications: OD (mm)Φ300Φ350Φ400Φ500Φ600Φ700Φ800Φ900ID(mm)180220240 250320380 400480560640Thickness(mm)12-161414-1915-1918 ...