1. Municipal Pipeline Trenchless Repair vs. Traditional Excavation: A Competition of Efficiency and Cost

Traditional excavation construction requires large-scale road breaking, with a construction period of 15-30 days per kilometer, and is prone to traffic congestion and environmental pollution. Municipal pipeline trenchless repair uses crawler HDDto lay and repair underground pipelines through guided drilling, which can shorten the construction period per kilometer to 3-7 days and reduce the comprehensive cost by 30%-50%.

Core Advantage: Municipal pipeline trenchless repair does not require road damage, especially suitable for urban core areas, commercial areas and other areas sensitive to traffic and environment. The low ground pressure (≤0.15MPa) of crawler equipment can reduce damage to the road surface and avoid subsequent repair costs.

2. How Can Crawler HDDs Adapt to Narrow Scenarios of Municipal Pipeline Trenchless Repair?

Municipal pipeline trenchless repair often faces problems such as narrow streets and many obstacles, and the design advantages of crawler HDD are prominent here:

Flexible Movement: The equipment adopts a modular crawler design (such as the Hengwang HWF50 model with a crawler width of 1330mm), which can freely turn in 3-meter-wide streets, and the height of the machine body is ≤2.2 meters, adapting to low space operations.

Precise Control: The crawler equipment is equipped with a 360° rotating operating platform (standard for Hengwang HWF135 model), combined with a wireless remote control system, the operator can adjust the drilling angle (entry angle 14-20°) in a safe area to ensure the accuracy of municipal pipeline trenchless repair (deviation ≤5cm).

Efficient Operation: The drill pipe box can be pre-installed with 40-44 drill pipes (φ42-60mm), which can be loaded and unloaded by a single person, reducing labor costs, especially suitable for the intensive operation needs of municipal pipeline trenchless repair.

3. Technical Adaptability of Crawler Equipment in Municipal Pipeline Trenchless Repair

Municipal pipeline trenchless repair involves different pipe diameters (φ150-1200mm) and geology (clay, sand layer). Crawler HDDmeet the needs through three technical characteristics:

1. Power Matching: Select equipment power according to the pipe diameter. For example, φ150-400mm pipes use 46.2kw engines (HWF50), and φ200-1200mm use 177kw high-power models (HWF460) to ensure drilling efficiency.

2. Mud System: Equipped with a high-pressure mud pump (maximum pressure 80Bar), which can stably protect the wall during municipal pipeline trenchless repair, prevent hole collapse, especially suitable for soft soil layers.

3. Pull-back Capacity: The maximum pull-back force of crawler equipment reaches 460kN (HWF460), which can easily complete the traction and laying of large-diameter pipes, meeting the heavy-load needs of municipal pipeline trenchless repair.

Hengwang Group's Trenchless HDD: A Reliable Choice for Municipal Pipeline Trenchless Repair

Hengwang Group's crawler HDD series (HWF50/HWF135/HWF460) is specially designed for municipal pipeline trenchless repair, with three advantages:

Scenario Adaptation: HWF50 has a compact body (3880*1330*1800mm), suitable for narrow streets; HWF460 has steel crawlers with rubber plates, adapting to high-load operations, covering the repair needs of φ150-1200mm pipes.

Technical Guarantee: Using Cummins/Yanmar engines, the hydraulic system efficiency is increased by 15%-20%, and it has passed the EU CE certification, meeting the environmental protection and safety standards of municipal pipeline trenchless repair.

Service Support: Provide a "four-dimensional integration" service (training, maintenance, accessories, solutions) to ensure the stable operation of equipment in municipal pipeline trenchless repair. If you need to customize a municipal pipeline trenchless repair plan, leave your project pipe diameter and street width information, and Hengwang's technical team will respond within 24 hours to match you with the optimal equipment model!

With its flexibility and efficiency, crawler HDD are reshaping the construction standards of municipal pipeline trenchless repair.

Choosing suitable equipment makes urban pipe network transformation more efficient and environmentally friendly.