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The Yellow River HDD Crossing Work for the Installation of Aviation Fuel Pipeline from Ningxia Petrochemical Co. to Yinchuan Hedong Airport was successfully completed.

The South Jumahe River HDD Crossing (III) for Mengxi Coal Gas Transportation Project (Phase I) was successfully completed.

Submarine HDD Crossing Works for Macau Peninsula – Taipa Island Natural Gas Pipeline Installation was successfully completed.

Cigu Watercourse HDD Crossing (South Line) for the Crude Oil Pipeline of Zhejiang Refining and Chemical Integration Project was successfully completed.

Successfu back-pull of the pipeline of Baigou River HDD work for Mengxi Coal-Gasified Gas Distrubution Pipeline (Phase I) Project

Successfu Back-pull of the Landfall Pipeline for the Xiushan East Subsea HDD Work for Connection of the LNG Pipeline with the XinAo Zhejiang Zhoushan LNG Receiving & Filling Station

Jiuzhou River HDD Crossing for Zhongke Refinery & Petrochemical Project

Hong Kong International Airport - C3501 Sewage Pipeline Installation by Horizontal Drilling Method； Contract Period: Mar 2019 until now; Client: Build King Construction Limited; Geology: Complex geological conditions composed of granite, coarse gravel and cobble sized rock fragments (fills), unknown metal obstacle, voluminous groundwater existing. Pipe Type: HDPE Pipe. Φ900mm×24m, Φ500mm×48m,Φ800mm×48m.

Thailand TBM Construction Project - Pracha Ruam Chai Road Improvement works, Nimimai, Bangkok, Thailand; Contract period: July 2018 to July 2019; Client: Metropolitan Electricity ity (MEA); Geology: Clay soil; Pipe size: Concrete pipe, 1800mm (OD) × 8000 m (Total).

Huayuan successfully completed the HDD ashore crossing for CNOOC Yacheng 13-1 Submarine Pipeline Gaolan Branch, which is domestically the first time of shore pulling for submarine pipeline by using HDD techniques.

Huayuan successfully completed the HDD crossing works of the twin parallel 5.2km offshore aviation fuel pipelines for Hong Kong International Airport.

Huayuan successfully completed the Minjiang River HDD crossing for the 2nd Phase of Haixi gas pipeline network (Fuzhou-Ningde Section).

Huayuan successfully completed Meihua waterway HDD crossing for the 2nd Phase of Haixi gas pipeline network.

Huayuan successfully crossed the Yellow River for the eighth time, when executing Zhengzhou Yellow river HDD crossing Project.

Huayuan Company was awarded the Honor of “Excellent Construction Business Company for the year of 2013”

Huayuan successfully resolved one of the HDD industry challenges, i.e. three-dimensional trajectory crossing, when successfully executing the Fushun Gongjiagou HDD project, awarded the Silver Medal of Qualified Petroleum Engineering Project.

Huayuan successfully crossed the excessive complicated strata, and completed the Yangtze River HDD crossing for Huanggang-Daye Gas Pipeline.

In the Yangtze River HDD crossing works for the Chongqing-Qijiang Product Petroleum pipeline project, because of the limited site area of the daylighting point, Huayuan innovated the forward reaming method and 21-pipes-in-one increment pipeline section installing method with forward thrusting devices.

In the HDD crossing of Liaohe River for Qinhuangdao-Shenyang Gas Pipeline, Huayuan used forward thrusting devices and techniques for the first time domestically to assist back-pulling of the pipeline into the borehole, setting a domestic HDD record of 1578m length of φ1016mm pipeline installed in medium to coarse sand strata which possesses inherent risks of higher resistance. (translation of the chinese texts in the figure: Liaohe River HDD Crossing: Qinhuangdao - Shenyang Natural Gas Pipeline Project Challenges: 1. The formation is mainly composed of coarse to medium coarse sand, which is most likely to cause the risk of gripping and locking the drill pipe down inside the borehole. 2. The diameter of the product pipeline is φ1016mm, and the length of the crossing section is 1570m. When back pulling, the extra resistance exerted on the pipeline due to the vast existence of coarse and medium coarse sand, exceeded the pulling force of the capacity of the main rig (HY-9800 Type Drill Rig). But with the assistance of the thruster with ~500 tonnes of thrusting capacity, the pipeline was successfully installed.)

Huayuan completed 3000 meters HDD crossing of Yellow River for the Product Petroleum Pipeline from Zhengzhou city to Tangyin county, when three items of HDD records by then were set, that is, the longest pipeline crossing, the longest cable conduit crossing, and the first time of applying drill-bits handshakes interception technique.

Huayuan company was assessed and appraised as "Hebei Provincial Advanced Construction Company in 2006".

All China Federation of Industry and Commerce (ACFIC) awarded Huayuan the honour of China Excellent Private Enterprise of Science and Technology.

Huayuan company was assessed and appraised as "Hebei Provincial Accredited Enterprise Technology Center" . Huayuan company was awarded as one of the "Top Ten Science and Technology Innovation Companies of Langfang City".

Huayuan valiantly extended HDD application to the area which is regarded most challenging and near impossible in HDD industry worldwidely - crossing the excessively vast cobble zones, when Huayuan triumphantly completed the Yellow River HDD Crossing for the National Major Project - SINOPEC Luoyang-Zhumadian Petroleum Pipeline.

Huayuan director, Mr. SHI Zhanhua, was awarded “China's Ten news makers of Science and Technology for the Year of 2015”.

Huayuan successfully completed Waidiao - Cezi Island HDD project, which was by then the longest HDD crossing in the world (2350m length of Φ610mm pipeline). Huayuan also rose to the challenge of complex strata composed of hard rock, gravel and silt layer with plastic flow trend which is in want of sufficient bearing capacity, and through which the borehole is susceptible to collapse.

Huayuan developed and manufactured HY-1300 type HDD rig, which was by then the first large-scale HDD rig domestically.

Huayuan advanced into pressure pipeline construction industry.

Huayuan company was established.