... ,wedge,base plate,spiral,duct,coupler. Material: alloy steel,cast iron,strip steel. Features: 1.LQM anchorage system can be used to ... can be also to 7mm, 5mm, strength 1470-1960Mpa PC steel wires.2. LQM anchorages system is complete in varieties and ... rusting and dirts . Before installation , rusting and dirts must be cleand to prevent from damaging the internal thread of wedge which will ...