1.scaffolding base jack 2.metal :Q235 3.size : as your want 4.good quality and best price 5.ISO9001 :2008 approved steel scaffolding base jack1.base jack material:High grade carbon steel Q235,Q245 or as required. 2.base jack height:520mm,539mm,610mm,915mm,1524mm or as required. 3.base plate:120×120×4mm or as required,and the plate can be made both curved and even. 4.base jack diameter of tube can ...