Zhonghan can provide drill pipe for many brands of HDD drilling Rigs. The trenchless directional drilling pipe laying method is a construction technology that uses cliff soil drilling tools, pipeline detection and other technical means to lay, repair and replace underground pipelines without excavating trenches on the surface. It uses a drilling rig placed on the surface to form holes by water jet or extrusion, and receives signals from the drill bit on the surface to control the drilling trajectory. The construction process is divided into: drilling pilot holes, reaming, and pipelines. Drag back three stages. It is suitable for horizontal drilling of drill pipes in various complex formations. It is suitable for drilling pipes of different specifications and models for different laying objects and pipe diameters and weights. It is suitable for ground drilling rigs to choose different specifications and models of thrust and pull back force. Rod drilling.
Manufacturing process of trenchless friction welding drill pipe:
Using petroleum-specific pipes, pipe end thickening technology, pipe end thickening meets API 5D standards Heat treatment of thickened pipe body, steel grade can reach G105 or G135 The joint blank forging manufacturing process, the thread adopts the laser heat treatment technology, the hard layer is 0.1-0.3mm, which meets the API SPEC7-1 standard The welding area adopts thermomechanical heat treatment technology, and the weld performance meets the API SPEC 7 standard 100% flaw detection of welds and joints Three-point pressure 100% inspection of weldsstruction technology that uses cliff soil drilling tools, pipeline detection and other technical means to lay, repair and replace underground pipelines without excavating trenches on the surface. It uses a drilling rig placed on the surface to form holes by water jet or extrusion, and receives signals from the drill bit on the surface to control the drilling trajectory. The construction process is divided into: drilling pilot holes, reaming, and pipelines. Drag back three stages. It is suitable for horizontal drilling of drill pipes in a variety of complex formations. Different specifications and models of drill pipes are selected for different laying materials and pipe diameters and weights, and different specifications and models of drill pipes are selected for the requirements of ground drilling rig thrust and drag force.
Manufacturing process characteristics of trenchless integral drill pipe:
Choose oil drill pipe special pipes that meet API standards, with stable and reliable performance Unique double thickening forming technology for drill pipe joints The transition zone is smooth and smooth, reducing mud flow resistance The first domestic intermediate frequency heat treatment production line for integral drill pipe primary processing technology The joint adopts high-strength medium sandblasting technology and laser processing technology, and the hard layer is 0.1-0.3mm The surface hardness, hard layer, and distribution of the two connecting ends are uniform, durable and stable and reliable, and improve the service life of the drill pipe.