... ten years production experience on formwork and scaffolding accessory including Wing nut, Formwork clamp, Tie rod, Slope plate, Water stop, Hex nut, Swivel ... wing nut, Climbing cone, Scaffold top cup, Prop nut, Prop sleeve, ... , Ledger end, Brace end, Waller plate and so on. Casting iron tie rod wing nut Dia 100mm