The Crack Sealing Machine Manufacturer!
Shandong Mingchengda Heavy Industry Machinery Co., Ltd. was founded in 2015, formerly Jining Dongsheng Industry and Trade Co., LTD., located in Jining High-tech Zone, Shandong Province, the company is mainly engaged in construction machinery, road maintenance equipment based manufacturing enterprises.
Why choose us
Professional team
The company has a professional production team of 110 people, including 2 engineers and 3 intermediate engineers. There are professionals who have been engaged in the research and development and manufacturing of construction machinery for many years.
24H Online Service
You can contact us to inquire about pre-sales, sales, and after-sales services, and we will give you a very satisfactoryWe are at your service online 24 hours a day.
Customer Service
Our customer service team is committed to providing exceptional support and addressing any concerns promptly. We prioritize clear communication and proactive problem-solving to ensure a seamless experience for every client.
Top-notch heating: Double-jacket melting tanks with forced oil circulation heat material fast and evenly. Some use world-brand burners-super efficient, eco-friendly, and cut down melting time so you work non-stop.
Safe & precise temperature control: Electronic thermostats keep temps steady. Hit the set temp It switches to automatically-no overheating. Plus, safety valves, low-pressure protection, and error alerts mean peace of mind.
Easy to use, flexible to work: The hose is fully electric-heated, bends easily, and won't clog-great for straight, sideways, or tricky cracks. The gun has a manual switch and stays heated, so no drips messing up the road after filling. Some models let you control the pump remotely-less waste, more savings.
Easy to maintain: Integrated circuits put all key info (temp, flow) on one panel. Critical parts like motors and pumps aren't submerged-fewer breakdowns, longer life.

Process of using Crack Sealing Machine
Clean the Crack:
The first step is to clean the crack thoroughly. This involves removing any debris, dirt, or vegetation from the crack. A wire brush, air compressor, or high-pressure water jet can be used to clean the crack.
01
Heat the Material:
Once the crack is clean, the next step is to heat the crack filler material. The material is typically a hot rubberized asphalt emulsion. The heating process makes the material more fluid and easier to apply.
02
Apply the Material:
Once the material is heated, it’s time to apply it to the crack. The applicator wand is used to dispense the material directly into the crack. The material is applied in a continuous stream, starting at one end of the crack and working to the other end.
03
Smooth the Material:
Once the material is applied, it needs to be smoothed out. A squeegee or trowel can be used to smooth the material and ensure it’s level with the surrounding pavement.
04
Allow the Material to Cure:
The final step is to allow the crack filler material to cure. The curing process can take several hours, depending on the temperature and humidity. Once the material is cured, the crack should be completely sealed, preventing further damage to the pavement.
05
Structures of Crack Sealing Machine
Burner - The burner adopts an Italian RIELLO 445T1 diesel burner. It has high combustion efficiency, safety, and environmental protection.
Automatic Constant Temperature Control - Adopts SLA-5000 intelligent digital temperature controller.
Electric Heating Tube - 5 meters electric heating discharge hose.
Hot Melt Kettle - Unique oil jacket hot melt kettle design equips with a safety valve, heats faster and more uniform. Hot melt kettle is designed for anti-clogging.
Steam-electric Integration Technology - Steam-electric integration of hybrid power, and electric drive technology. It has the advantages of low emissions, low energy consumption, energy-saving, and environmental protection.
Intelligent Detection Technology - Advanced intelligent ignition, detection, and temperature control technology.
Thermal Cycle Heating System Design - The hot air double-circulation convection heating in the kettle, in addition, the metal sheet has high heat conduction efficiency, which makes the crack sealing machine more energy-saving and environmentally friendly. The heat-conducting oil jacket has higher energy storage, an obvious heat-conducting effect, and a stable constant temperature. A separation device is installed between the hot melt kettle, and it can speed up the melting speed and greatly improve work efficiency.
Efficient Discharge System - Efficient discharge system design, detachable built-in oil pump, no leakage. The temperature of the pump body is always the same as the filling glue, and there is no clogging phenomenon. A constant pressure protection device can effectively prevent the tube from scalding.
Low Center of Gravity Design - The low center of gravity design makes work safer and comfort and reduces labor intensity.
Stirring System - Electric high-torque stirring shortens the dissolving time by nearly half.
FAQ
As one of the leading road joint filling manufacturers and suppliers in China, we warmly welcome you to buy durable road joint filling made in China here from our factory. All customized products are with high quality and low price.
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