our scaffold jack Height: 1.4-5.5m Tube dia: 40, 48, 56, ... : 1.6-3.2mm Weight: 4.68-27.36KG Scaffold jack has high bearing strength. The overall weithg was reduced it ... factory can produce all kinds of formwork fasten system, formwork jack system, scaffold ( falsework) and accessories.Quality Control:We have obtained ...