20, working load 150kn to din 18216, breaking load>350kn We, hebei longquan industry co., ltd. (formworkparts), are the manufacturer of formwork parts and scaffolding accessories from china. We mainly supply wing nuts, tie rod, water stop, hex. Nuts, bar couplers, rapid clamps, frame formwork clamps, jack base, u head jack, prop nuts, prop sleeves, and other scaffolding fittings. In bags