Home Micropiles Self-drilling bars Geotechnical Solutions Who we are Contacts SELF-PERFORATING BARS A self-drilling bar is a hollow bar threaded along its entire length, obtained by cold rolling from a smooth tube The characteristics of the self-drilling bars offer numerous advantages and can be used from the ground to the micropiles to the bolts. Their use combines the load-bearing function with perforation. They are used for the stabilization of soils and / or structures by acting on the supporting system and fortifying it. Le barre trovano applicazione nel campo della post-tensione e per svariati lavori di ingegneria geotecnica e strutturale poichè presentano numerosi vantaggi: hanno un'agevole movimentazione sul cantiere, possono essere fornite nella misura standard di 6,00 metri o tagliate a misura ed hanno un'aderenza ottimale con il calcestruzzo e con semplici procedure possono essere protette contro la corrosione. Hanno particolare efficacia per la chiodatura di costoni, pareti rocciose e scarpate, per la stabilizzazione di pendii e il contenimento di declivi naturali, fanno da ancoraggio per reti e barriere paramassi, sono utilizzate per le pareti di scavo delle fondazioni. Trovano ampia applicazione nelle gallerie e nelle opere sotterranee, e per viadotti. APPLICAZIONI This self-drilling reinforcement system is used in civil engeneering and underground construction and in particular for rock mass stabilization,in tunneling and mining industry fields. LAVORAZIONE R-Tubi S.p.A. manufactures and distributes high resistance drilling bars with two different systems: The standard system with hollow bars shaped of controlled steel worked with a cold process; The heat treatment system in which the same bars after been machined, undergo a complementary thermal treatment in order to increase resistance. The drilling bars have an external variable diameter usually from 32 mm to 51 mm and an inner diameter which depends from the external one. The hollow of the bar allows rotary percussion drilling with air, water, grout and fluids with a range of button and edged drill bits from 51 to 130 mm Threads Technical Features Bars Technical Features Accessories Cutters Plates APPLICATIONS IN CIVIL ENGINEERING Discharge of the hydrostatic thrust Stabilization of slopes and excavations Anchoring of avalanche protections Anchoring in particularly difficult and differently compacted soils Consolidation of escarpments and unstable slopes Nailing and soil nailing Tie rods for bulkheads / berlines APPLICATION IN THE UNDERGROUND Stabilization of tunnel portals Front threading in mines and underground tunnels Surface stabilization Radial bolting in rock Bolting of the ceiling and sides Consolidation injections R-Tubi SpA VAT number 01663100160 Share capital (€ 1.003.600,00) REA (RM 1515309) Copyright 2018 Privacy Policy Quality policy Quality Policy Via Eleonora Duse, 28 00197 Rome - Italy info@rtubi.com Follow us: