Manufacturer offers processing services for hollow anchor rods, hollow grouting anchor rods, grouting steel pipes, tunnel support pipes, etc. As a grouting pipe manufacturer, we specialize in pre-buried grouting pipes for steel flower tunnels, high-pressure grouting steel pipes for anchor rods, and seamless steel pipes for pile foundation anchor ropes. Our main products include hollow anchor rods, self-advancing anchor rods, prestressed anchor rods, self-advancing tunnel support anchor rods, and anchor rod accessories. As an integrated manufacturer focusing on research, production, sales, and service, we lead in products such as hollow anchor rods, self-advancing anchor rods, prestressed anchor rods, tunnel support anchor rod series, and special anchor rod series. Our products are widely used in railroads, highways, mining, hydropower projects, and more. We have been providing配套 services to domestic construction companies for a long time and have received widespread pr...