Ditch Witch Rock Drill Rods for AT30 JT30 AT / 2.77 DS Thread

Rock Drill Rods for HDD Machines We offer new HDD rock drill rods equipped with a 2.77 DS thread system, designed for demanding rock drilling applications and All Terrain HDD systems. These drill rods are manufactured for professional HDD works in hard ground and rock conditions, where high fatigue resistance, precise thread connection and reliable drilling fluid flow are essential. The rods are made from certified heat-treated alloy steel, grade S135, with a high yield strength. This material provides durability and resistance required for heavy-duty HDD drilling operations. The 2.77 DS thread is a specialized connection system dedicated to HDD rock drilling applications. Precision-machined threaded connections provide stable performance and reliable operation during demanding drilling cycles. Technical specification: Application: HDD rock drilling / All Terrain HDD systems Thread type: 2.77 DS Outer pipe diameter: 70 mm Tool joint diameter: 82 mm Wall thickness: 7 mm Working length: 2,825–2,847 mm, depending on thread make-up Steel grade: S135 Material: certified heat-treated alloy steel Condition: new / unused Product features: Designed for HDD rock drilling applications Dedicated 2.77 DS thread system Certified S135 steel with high yield strength Good balance between weight and fatigue resistance Suitable for demanding working cycles Compatibility confirmation available before purchase DRILLEX has been supplying HDD drilling tooling and PE butt fusion welding machines since 2018. We deliver products across Europe and support customers with technical advice and compatibility verification before purchase. Before ordering, you can send us your machine model, technical dimensions or photos of your old drill rod. We will help confirm compatibility.