Heat Treated Wear Resistant Spiral Drill Rods for Tunneling Projects

A: This drill rod is engineered for harsh geological conditions and is widely applicable to various rock formations (such as granite, limestone, and sandstone), as well as fractured strata and soil layers. It is commonly used in mining extraction, tunneling, subway construction, quarrying, and water well drilling operations.

A: Our threads are precision CNC-machined to meet mainstream industry standards . They ensure a seamless, secure connection with matching DTH hammers and drill bits of the same standard (including the bits shown in the image), guaranteeing efficient transmission of torque and impact force.

A: The rods are manufactured from premium high-strength alloy steel, combined with advanced carburizing, quenching, and tempering processes. This delivers exceptional surface hardness to resist abrasive rock wear while retaining excellent core toughness to withstand heavy shock loads. Additionally, the anti-corrosion coating effectively protects against moisture and acidic environments.

A: After each shift, please clean off mud and rock debris using a high-pressure water gun, and pay special attention to checking the threads for any wear or deformation. For long-term storage, apply anti-rust oil to the threads, fit them with protective thread caps, and store them indoors in a dry, ventilated area away from direct sunlight and rain.

A: Yes, we offer comprehensive customization services. We can tailor the rod length, outer diameter, and special thread specifications based on your specific hole depth requirements and drilling rig models. We also provide one-stop combined purchasing options for drill rods, bits, and hammers.