関根工業 List of Products and Services

The "Grun Drum Method" is a construction method that uses a pneumatic propulsion machine powered by compressed air from a standard compressor. By utilizing the force of compressed air, the piston inside the Grun Drum strikes the main head, transmitting this impact force to the steel pipe, thereby enabling the propulsion of the steel pipe. Please feel free to contact us if you have any inquiries. 【Features】 ■ Can be constructed in narrow road areas ■ Applicable to a wide range of ground conditions ■ No need for supporting walls ■ Can be propelled in any direction *For more details, please download the PDF or contact us.

• Civil Engineering Method
• Ground foundation construction method
• Special Construction Method

The HDD method is one of the most effective non-excavation methods for forming buried pipelines such as gas, water supply and drainage, and power cables. It excels in environmental protection and safety, and is also a speedy construction method. By incorporating a transmitter into the drill head and measuring it from the ground, it is possible to instantly and accurately grasp the depth and direction, allowing for drilling while avoiding existing pipes and structures buried in the road. Please feel free to contact us if you have any inquiries. 【Features】 ■ Accurate construction is possible ■ Improvement in environmental protection and safety ■ Easy pull-in work *For more details, please download the PDF or contact us.

• Civil Engineering Method
• Ground foundation construction method
• Special Construction Method

The "Guided Vibro Drill Method" is a technique that incorporates vibration into conventional HDD machinery. As a result, it is now possible to perform construction in gravelly mixed soil and water-bearing sand layers, which were previously difficult to work with, and it also enables large diameter and long-distance advancements. This method meets the "various needs of our customers" and can demonstrate its effectiveness even under special conditions such as ground improvement. Please feel free to contact us if you have any inquiries. 【Features】 ■ Enables precise construction ■ Improves environmental protection and safety ■ Simplifies retrieval operations *For more details, please download the PDF or contact us.

• Civil Engineering Method
• Ground foundation construction method
• Special Construction Method