... concrete spun pile Material DescriptionCarbon steel Q235 or SS 400OD300,400,500,550,600,700,800,1000 or 1200mm etc ( ... Also Acceptable Custom)ID180, 220,240,250,320, 380, 400,480,560,640mm etc (Also Acceptable Custom)Thickness12-25mm (Also ... Acceptable Custom)TechniqueHot RollingSpecifications: OD (mm)Φ300Φ350Φ400Φ500Φ600Φ700Φ800Φ900ID(mm)180220240 250320380 400480560640Thickness12-161414 ...