... double layer scaffoldings, formwork supports, bracing column, material lifting device, self-lifting scaffolding, overhanging scaffolding etc.2.High efficiency: evading the ... ,insulation steel pipe and so on.Item 3:Steel coil ,steel plate ,strip,sheetItem 4:Steel bar or ... ,square pipe,rectangular tubeItem 6:Galvanized steel pipe,galvanized coil ,plate ,strip,sheetItem 7:pipe fittingsDue to business needs ...