China Accesorios Encofrados, Tuerca, wing nut, flange nut, formwork accessories Galvanized wing nut, Formtie nuts, flange nut, form-tie, formwork accessories Used together with tie-rod to fasten wall or column formwork. Can match well with doka or peri systems. Galvanized. Also, We can supply all kinds of formwork accessories, such as wing nut, tie-rod, plate, water stop, tripod, fork head, anchors, U-head, base jack, etc. Also, we can supply all types of scaffolding parts & fittings for ringlock scaffolding system, cuplock scaffolding system, kwikstage scaffolding system and frame scaffolding system. All these accessories are universally used, some of which can work well with Doka and Peri formwork systems.