Independent Research and Development

National standard certification, and excellent quality to create the pinnacle of road maintenance machinery performance!

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Featured Products

We independently developed the grinding vehicle system, offering a comprehensive range of components for tampers, stabilizers, ballast regulators, screening machines, and other large-scale railway maintenance machinery.

Double - Ended Turnout Grinding Robot

The double-head grinding vehicle independently developed by our company is designed to solve the blind spot problem in traditional turnout grinding. Although the existing turnout grinding equipment can cover most areas, due to the limitations of the turnout structure, some areas still cannot be ground or are not ground thoroughly. In order to solve this problem, the double-head grinding vehicle can accurately act on the switch part and the fork part of the turnout.

Medium-sized Intelligent Rail Grinding Vehicle

The rail grinding vehicle independently developed by our company integrates information technology into the field of rail maintenance for the first time. The equipment consists of a vehicle body, generator set, drive system, dust removal system, agrinding unit and PLC control system. Through the automatic lifting device on the flat car and the cooperation with the hoisting transfer vehicle, it can realize convenient up and down road functions. The equipment innovatively adopts automatic profiling and multi-head grinding technology, bringing an efficient and precise operation mode to railway maintenance.

Hydraulic Turnout Tamping Machine

Hydraulic turnout tamping machine is a track maintenance machinery equipment specially designed for railway turnout sections.
The core function is the tamping operation of the ballast at the bottom of the turnout sleeper, and it can also meet the tamping requirements of the main line track bed. The equipment adopts advanced hydraulic technology and structural design, and has the characteristics of efficient operation, stable performance, and convenient operation. It is especially suitable for the maintenance scenarios of modern railway heavy-load lines.

Hydraulic Line Tamping Machine

Hydraulic tamping machine, specially designed for railway track maintenance. The equipment utilizes a hydraulic drive system to tamp the ballast, enhancing the density and elasticity of the track bed. This improves track stability and smoothness, prolongs the service life of both rails and wheelsets, and reduces railway transportation maintenance costs.

Lithium Battery Manual Band Saw Rail Sawing Machine

The lithium battery manual band saw rail sawing machine developed by our company is suitable for 43-75kg/m specification rails.It can quickly cut off the rail head, rail waist and rail bottomof the rail, and the cutting end surface is flat and burr-free.The equipment adopts constant speed cutting technology to ensure stable cutting efficiency when the load changes.The cutting depth can be flexibly adjusted to suit different rail types and operating scenarios.

Lithium Battery Drilling Machine

The lithium battery drilling machine is specially designed for rail drilling and consists of battery, feeding mechanism, clamping mechanism, pressing wheel, cooling device, drill bit and other components.

Hydraulic Lifting And Alignment Machine

The lifting and lining unit is composed of a frame/housing, a power source, a working mechanism (including the lifting device, lifting cylinders, and lining cylinders), and a traveling mechanism. It is mainly used to adjust the vertical height and horizontal position of the rails, eliminate track deformation, and ensure line smoothness and driving safety.

Lifting And Transportation Device

By using lifting and transportation devices reasonably, railway maintenance can significantly improve operational efficiency, reduce labor intensity, and ensure construction safety. It is an indispensable technical means for modern railway maintenance.

CDC-16 Tamping Device

CDC-16 tamping device is the core operating component of the turnout tamping vehicle, which operates in coordination with the hydraulic drive system, automatic control system and safety protection design. It supports two operation modes: double-sleeper tamping and single-sleeper adjustment, and can flexibly adapt to the tamping needs of lines with different densities of rail sleepers.

DWL-48 Tamping Device

The core component of the DWL-48 continuous operation tamping stabilization vehicle. The device is equipped with independent front and rear tamping heads, featuring flexible switching between single-sleeper tamping and single-side tamping modes. It can accurately adapt to irregular sleeper spacing or complex track conditions, providing a reliable solution for line maintenance across diverse working scenarios.

DCL-32 Tamping Device

DCL-32 tamping device, the core component of the DCL-32 continuous operation tamping vehicle. It adopts an innovative design that combines continuous uniform speed operation with step-by-step operation of the working trolley. Through the coordinated operation of the hydraulic drive system, automatic control system and safety protection devices, efficient vibratory compaction of ballast under the sleepers on both sides of the rail can be realised.

DC-32 Tamping Device

DC-32 Tamping Device, the core operating component of the DC-32 Tamping Vehicle. It supports flexible switching between single-sleeper or double-sleeper tamping mode to meet the operation requirements of different sleeper spacings. The equipment adopts high-frequency vibration compaction of ballast under the sleepers on both sides of the rail through the coordinated operation of a hydraulic drive system, an automated control system, and safety protection devices to improve the density of the track bed.

Tamping Pick

The core component of a railway ballast tamper. It transfers energy to the ballast layer through the impact force and vibration waves generated by high-frequency vibration, so that the ballast particles under the sleepers are rearranged and quickly compacted, effectively improving the lateral resistance and stability of the track.

Stabilizer

The Stabilizer (also known as a Track Stabilizer) is a vital piece of railway maintenance equipment designed to reinforce ballast bed stability and reduce track settlement. Unlike tampers (which focus on compacting ballast under sleepers), the Stabilizer works by applying uniform downward pressure and low-frequency vibration to the entire ballast layer—locking particles into a permanent, dense configuration. This process eliminates "false compaction" (temporary ballast tightness that loosens over time) and extends the interval between maintenance cycles by 50%.

Tamping Pick ND-6

The Tamping Pick ND-6 is a specialized tool for railway and subway line maintenance, designed to deliver precise and efficient tamping of track ballast.

Internal Combustion Turnout Grinding Machine NCM-4II

The Internal Combustion Turnout Grinding Machine NCM-4II is an upgraded version of the NCM-4.9, specifically optimized for heavy-duty railway scenarios like mining railways and Heavy-duty cargo lines.

Tailored Solutions

Tailored Solutions for Your Railway Maintenance

Focusing on the research and development, production, sales and service of large-scale railway maintenance machinery and accessories, the core products include the independently developed grinding car system, a full range of parts supply and overhaul services.

Transport-specific Track Scenario

Transport-specific Track Scenario

Focusing on daily maintenance of railway lines, the cleaning and screening machine series efficiently removes dirt from the roadbed, the ballast car series accurately distributes ballast, and the grinding car series repairs the rail profile. Other accessories are used to ensure track smoothness, extend the service life of the line, and ensure the safe operation of heavy-load trains.
Track engineering Scenario

Track engineering Scenario

For new or overhauled lines, the tamping car series deeply compacts the ballast, the stabilization car series accurately adjusts the track geometry parameters, and the small tamping device flexibly responds to complex working conditions. The whole series of products work together to improve the efficiency of line opening and quality acceptance standards.
Railway Electrification Scenario

Railway Electrification Scenario

Serving the construction and maintenance of the contact network, the stabilization car series is equipped with a special module to ensure the accuracy of the track surface, the small tamping device accurately repairs the roadbed settlement, and the supporting metallurgical technology sector provides high-strength contact network pillars to ensure the safe and stable operation of electrified equipment.
Civil engineering Track Scene

Civil engineering Track Scene

Applied to infrastructure projects such as subways and urban rails, the grinding machine series processes rail welding joints, the screening machine series maintains tunnel roadbeds, and the tamping machine series adapts to small radius curve construction. All products have passed national standard certification and meet the track accuracy requirements under complex geological conditions.

About Us

Who We Are?

Tangshan Kuntie Technology Co., Ltd. is located in Nanbao Economic Development Zone, Caofeidian, Tangshan City, with a total area of 100 acres and an investment of 200 million yuan. The company was established in September 2011 and is a large-scale road maintenance machinery manufacturing enterprise integrating production, processing, design and research and development.

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Our Advantages

Why Choose Our Tamping Machines For Your Railway?

Service Advantages

Focusing on customer needs, we have established a comprehensive service system, providing one-stop solutions. We precisely respond to the individual needs of customers in different regions. From product consultation and solution design to after-sales support, we consistently provide professional and timely service to ensure customers' construction efficiency and stable equipment operation.

Technological R&D Advantages

Our independent innovation and dedicated R&D team have enabled us to possess advanced design and technical capabilities, holding numerous invention patents. We have fully mastered the key technologies for our product lines, including grinding vehicles, tamping vehicles, stabilizing vehicles, ballast vehicles, and cleaning vehicles.

Production Advantages

We possess a complete industrial chain integrating production, processing, design, and R&D. We possess large-scale, high-precision production capabilities. Strict system certification and a comprehensive quality assurance system ensure stable and reliable product quality.

Blogs

Industry Insights & Product Knowledge

What Does A Ballast Regulator Actually Do?

IntroductionMany people assume a ballast regulator simply moves stone along the track, but its real role is far more precise and critical. A ballast regulator shapes, redistributes, and finishes ballast to control drainage, stability, and inspection readiness. Modern railways rely on this final shap

17 February 2026

Ballast Regulator vs Tamping Machine: Key Differences

IntroductionRailway maintenance decisions shape safety, ride comfort, and asset value across rail networks. Engineers often debate whether a ballast regulator or a tamping machine delivers greater impact in daily operations.

17 February 2026

Hydraulic Rail Stretching Machine YLS-900I.png

Rail Grinding Vs. Rail Replacement: Cost Analysis

IntroductionRail assets represent one of the largest long-term investments in any railway network. Every maintenance decision affects budgets, safety margins, and service reliability. The financial question behind rail grinding vs. rail replacement is not about choosing one technique over the other

12 February 2026

Focused on Customer Needs

Based on the customer's line type (such as trunk railway, subway, plateau railway), maintenance frequency and budget, we provide one-to-one technical consultation and tailor-made equipment configuration solutions.