hexnutforanchorboltsManufacturs Our History With hard work and success made in the past 20 years, SINODRILLS has evolved from a trading company to an international market-oriented specialist supplier in drilling industry with an integration of researching, services, marketing, manufacturing and finance. Especially in the past five years, the number of countries we export has been increasing steadily, and the annual sales volume has been growing steadily. We aim to increase global market and commit to maximizing customer鈥檚 benefit by supplying better and better drilling solutions. Our Product Self-drilling anchor tools Self-drilling anchor bar Self-drilling anchor bit Self-drilling anchor coupling Self-drilling anchor nut Self-drilling anchor accessories Product Application Soil nailing Rock bolting Micro-piling Tunneling Mining InfrastructurehexnutforanchorboltsManufacturs website:http://www.metanchor.com.cn/