On February 17, 2023, the Yutong YTR456HE electric rotary drilling rig newly purchased by Shenzhen Litai entered the Shenzhen Metro Line 8 project. The Yutong electric rotary drilling rig ran at full capacity, working an average of 16 hours per day with the equipment never shutting down and operators working in two shifts. Over 6 months, it accumulated 2,800 hours of construction, ensuring the smooth completion of the pile foundation works for the Shenzhen Metro Line 8 project.

High Availability · Truly Reliable

Lin Weibo, Chairman of Shenzhen Litai Construction, stated: "On February 17, the Yutong electric rotary drilling rig was put into use at the Shenzhen Metro project. Over the past six months, this machine has operated stably for 2,800 hours, often running continuously while operators took turns resting. Despite the high-intensity work, the equipment has never had any problems."

Faced with complex geological conditions, the Yutong YTR456HE electric rotary drilling rig still delivers stable output and performs round-the-clock uninterrupted construction operations, which reflects the strength of Yutong's three-electric (battery, motor, electronic control) technology. As early as 1997, Yutong began research and development of new energy technologies. After nearly 30 years of development, Yutong has fully mastered core new energy technologies.

Hard Rock Drilling · Truly Efficient

The Shenzhen Metro Line 8 project is close to the sea to the east. The slightly weathered rock layer has a hardness of 110 MPa, and the moderately weathered rock layer has a hardness of 70 MPa, presenting high hardness and difficult hole opening. Standing under the clear sky, the Yutong YTR456HE extended-range electric rotary drilling rig easily drilled cast-in-place piles with a depth of 23 meters and a diameter of 1.5 meters, helping the Shenzhen Metro project rise steadily.

The Yutong electric rotary drilling rig is driven by an electric motor, featuring high torque at the rotary drive, high drilling efficiency, and strong rock-breaking capability. During construction, thanks to the equipment's outstanding performance and professional construction techniques, the Yutong YTR456HE extended-range electric rotary drilling rig repeatedly extracted complete rock cores with a diameter of 1.5 meters and a height of 2 meters.

Electric Drive · Truly Economical

The reason customers purchase electric rotary drilling rigs is that they place great value on the equipment's economic advantages. According to construction data, the Yutong YTR456HE extended-range rotary drilling rig consumed a cumulative total of only 14,815 L of fuel over six months, saving more than 800,000 yuan in energy consumption alone, winning over customers with its superior energy-saving and consumption-reducing performance. Moreover, the Yutong electric rotary drilling rig saves time and effort in maintenance, further saving a considerable amount in maintenance costs.

Leveraging the Yutong Group's strong accumulation of new energy technologies, Yutong Heavy Industries launched the world's first motor direct-drive pure electric rotary drilling rig in 2020 and the first extended-range electric rotary drilling rig in 2021. Today, it has developed comprehensive advantages spanning from market to R&D, material selection to manufacturing, and quality control to service. Having withstood extreme operating conditions such as severe cold, extreme heat, high humidity, and hard rock, it has earned high customer recognition for its economy and reliability.