HIGHLING GROUP Over 20 years development,We owe three subsidiaries: Shandong Highling Dredging Equipment and Machinery Co., Ltd.,Shandong Haiyang Ore Machinery Manufacturing Co.,Ltd. and Shouguang Yongde Shipping Manufacturing Co.,Ltd.

we have blanking workshops, gold panning machinery processing workshops, machining workshops, anti-corrosion workshops, general assembly workshops, product debugging and testing centers before ex-factory.

The products are of a great variety including 800—20000m3/h large scale dredging and sand mining equipments (which includes hydraulic cutter suction type, hydraulic bucket wheel type, mechanical cutter suction type and suction type),gold panning dredger, iron extracting dredger, iron extracting equipments, sand sieving machines, crusher, weathering sand producing lines(break, rinsing and separating). All the products are with different sizes for customers’ choices. We can also design and produce special types of machinery according to customers’ requirements.

2. Working site abroad

1) The seller will send 2-3 qualified and experienced engineers to the buyer’s workplace to direct and guide the cutter suction dredger's installation and training workers operating.

2) To assist in the installation, the buyer will arrange for 6-8 workers to aid these engineers in the process of installation.

3) Usually installation is expected to take 10-20 days.

4) The seller’s engineers must arrive at the buyer’s designated place within 3 days after the cutter suction dredger has been transported to the workplace.

3. Transportation to the port from factory

Because pontoons of dredger are designed wider and longer, they are transported in bulk vessel from the sea. And also in the transportation process, pontoons are anti-corrosion paint, then it doesn’t matter which place they will be put, in the deck or at the bottom of the vessel. Lug and safe point hoist have been designed on the deck of the pontoon; it is convenient for loading and unloading.

4. Engine room inside

Engine room is the heart of the dredger. There are equipments inside: main diesel engine, auxiliary diesel engine, dredging pump, gear box, coupling, generator, hydraulic system, and different cables for connection.

In order to have good connection and performance, different foundations are designed to put the dredging pump, the engines and the coupling; around the foundation, there are also frames designed as supportive of foundation.

On the wall, a lot of compartments are designed for tools; it is convenient for repairing and maintaining.

5.   Customer visiting and negotiating

In order to make our clients satisfied, we sincerely invite clients to visit our

factory and realize our research team and products, clients' technical questions we all give the solutions by engineer, by this kind of communication, clients are confident to our products and after-sales services.

6. Testing before ex-factory

Testing center for ex-factory tested. All our products will be tested in the testing center before ex-factory and dismantle for shipping to the Tianjin Port.  In the tested process, all testing is like the dredger working in the work site, operating performances and products safety will be tested and recorded. This test will reduce debugging time in the working site and increase training time for workers. 

Length of the testing center is 60m, width is 28m, and depth is 8m.

 In order to guarantee good performance and safety of our cutter suction dredger, all our products will be tested in the testing center before ex-factory. It is tested like the machine working in the customer’s working site. Performance and safety will be tested and recorded in the testing process.

Before one day of the testing, engineers from different equipments of suppliers will be in the factory to assist the testing, for example, engineers from Cummins engine Chonging; engineers from dredging pump company,; engineers from generator company. Usually, before 5 days for the testing, the seller will inform the buyer for supervising the testing process before dismantle the dredger. For the testing, totally is 5 days. The 1st day is testing the sealing and anti-corrosion painting of the 3 pontoons; the 2ndday is hydraulic system testing; the 3rd day is main engine and auxiliary engine testing when dredger in the condition of working; the 4th day is hydraulic cutter driven system in the operating room, and the 5thday is dredging pump testing in different pressures of water flow. 

After testing, dredger will be tug out from the testing center for dismantle and shipping. After the dredger dismantle, 3 pontoons will be repainting, because in the testing process, there will be oil on the deck and pontoons.

6. Main parts and spare parts for option

 7. case:

Thanks for your attention on our products.