+86-18052086280   +8618936869890 

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History of HDD

​1.In 1971, the American Mr. Martin Cherrington invented the horizontal directional drilling technology and manufactured the first HDD concept machine, which created a precedent for trenchless technology.

2.In 1986, the first HDD rig RB5 was imported from USA into China, for the project of an oil pipeline crossing through Yellow River.

3.In 1998, the first Dilong HDD rig was used for the construction of a job site. This was the first HDD rig in China which was independently designed and manufactured by a private company.

4.Nowadays, we have about 500 oversea customers using Dilong machines in over ten countries and about 5000 HDD rigs under using in China.
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WHY CHOOSE US

Jiangsu Dilong Heavy Machinery Co., Ltd. is one of the earliest specialized private companies in no-dig industry (HDD) in China. The company has our own construction subsidiary. All types of products are applied to our own projects first, and then the R&D center shall follow the feedback from job site and get improvement accordingly.

OUR ADVANTAGES

With trenchless technology, underground utilities can be installed, replaced or renewed with minimal excavation and disruption to residents, businesses and traffic.

OUR QUALITY CERTIFICATION

We shall maintain our commitment of creative innovation, strong quality, timely training and consistent service as always

GET MORE BENEFITS

Deliver innovative products in the market at a faster pace;Enhance the reliability of product’s quality.

OUR BUSINESS SCOPE

Our machine has already been sold to India, Russia, Indonesia, Vietnam, Singapore, Australia and other countries of the world. 

VIDEO

Jiangsu Dilong Heavy Machinery Co., Ltd., as a member of ISTT (International Society for Trench-less Technology) and CSTT (China Society for Trench-less Technology), started the trench-less R&D and construction since 1998.

NEWS

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JOB SITE SHOW

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ABOUT DILONG

Jiangsu Dilong Heavy Machinery Co., Ltd. is one of the earliest specialized private companies in no-dig industry (HDD) in China. We shall maintain our commitment of creative innovation, strong quality, timely training and consistent service as always, your visit and booking shall be a new start for our long term cooperation.
 

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CONTACT US

   No.19th, East Tuanshan Road, Lishui District, Nanjing City, China
 +8618052086280    
     +8618936869890     
  william@njdl.com 
      jack@njdl.com        

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