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