Detailed Introduction to TBM Cutters, RBM Roller Cutters, RCD Roller Cutters & Wear & Heat-Resistant Materials (Customized Version for Overseas Markets)

This paper focuses on customized demands for overseas markets, introducing four core products: TBM Cutters, Raise Boring Machine (RBM) Roller Cutters, Reverse Circulation Drilling (RCD) Roller Cutters, and Wear & Heat-Resistant Materials. It briefly describes their specifications, advantages, application scenarios and quality standards. The products are compatible with mainstream overseas equipment models, covering various industries and geological conditions. Adopting advanced manufacturing processes, all products are certified under ISO9001 and can be supported with relevant international certifications.OEM/ODM customization is available. Supported by an annual production capacity of 30,000 sets of cutters and over 10,000 tons of wear & heat-resistant materials, together with multilingual technical support and full-cycle after-sales service, the products fully meet the supporting requirements of complex overseas engineering projects.

2026-03-10

3 Minutes to Understand the Wisdom of China's Shield Machines in Metro Construction

This article adopts the "3-Minute Read" perspective to introduce the core role of China's shield tunneling machine as a "mobile smart factory" in metro tunnel construction. It analyzes the principle of achieving "one-pass tunnel completion" through five precise steps, highlighting its significance as an embodiment of the transition from "Made in China" to "Intelligently Made in China" and the applied value of Chinese engineering wisdom.

2026-02-24

A Letter to Our Distinguished Visitors Worldwide

2026-02-06

China's "Deep-sea Space Station" Completes Debut

On February 6, the "Deep-sea Space Station" completed its first application at the Jintang Undersea Tunnel. The 75-meter high-pressure operation broke through the traditional depth limit, marking a new breakthrough in China’s deep-buried tunnel construction technology and filling the domestic gap in relevant fields.

2026-02-06

Company Leaders Attend the Third 2025 Executive Vice Chairman Meeting of the International Association for Large-Diameter Engineering Shafts, Piles and Deep Foundations

On January 10, 2026, the Third 2025 Executive Vice Chairman Meeting of the International Association for Large-Diameter Engineering Shafts, Piles and Deep Foundations was successfully held in Ningbo. Mr. Chao Huanqing, Chairman of our company, Mr. Yang Jingrui, Chairman of our controlled subsidiary (Luoyang Jiujiu Wear-Resistant Material Manufacturing Co., Ltd.), and Mr. Jin Wenge, Vice General Manager of our company, attended the meeting as relevant members of the Association .

2026-01-12

Congratulations to the "Zhenxing" tunnel boring machine on the successful completion of its cutter inspection!

The "Zhenxing" tunnel boring machine used for the right line of the Yanlu Passage over-river project is a 15-meter-class, ultra-large-diameter slurry shield designed and manufactured by CCCC Tianhe specifically for Nanjing's cross-river tunnel. The tunnel’s shield-driven section spans a total length of 2,975 meters. This project features significant characteristics such as a large cross-section, high water pressure, extended distances, and exceptionally abrasive ground conditions. Moreover, most of the construction lies beneath the riverbed, with the hardest rock layers in the hard-rock sections exceeding 70 MPa in strength. The diverse and complex geological conditions place extremely stringent demands on the cutting tools used during excavation.

2020-07-03

Luoyang Jiujiu Technology Co., Ltd. 20th Anniversary Celebration & Yuntai Mountain Resort Retreat

In August 2016, to celebrate the company’s 20th anniversary, a Yuntai Mountain resort getaway was held under the theme "Moving Forward Together, Creating Brilliant Futures." Yuntai Mountain, historically known as "Fufu Mountain," earned its second name due to its towering peaks and the perpetual clouds and mist that shroud the mountain throughout the year. The terrain is rugged and steep, with pristine forests blanketing the entire area. Towering over the landscape are deep, serene valleys dotted with crystal-clear streams and tranquil pools, complemented by countless breathtaking waterfalls and cascading springs. The scenery is nothing short of picturesque, featuring uniquely shaped rock formations that seem straight out of a dream.

2016-11-21

Luoyang Jiujiu Technology Co., Ltd. Successfully Held the 2015 Baoduzhai Red Tourism Event

In August 2015, our company organized a two-day trip to Luanchuan Baoduzhai, themed "Remembering the Martyrs and Revisiting Our Red History." Baoduzhai boasts rugged, undulating terrain that stretches endlessly, with its steep and perilous landscape. Back then, PLA soldiers bravely carried explosive packs and scaling ladders, defying enemy fire to liberate this ancient fortress—once home to generations of impoverished villagers trapped in dire suffering. At the site, employees paid tribute at the Heroes' Monument, watched a documentary chronicling the liberation of Baoduzhai, and witnessed firsthand the inspiring scenes of heroic martyrs fearlessly battling through relentless challenges to safeguard their homeland and protect their cherished community.

2015-09-17

Our company's ultra-large-diameter engineering drill bits have been perfectly applied in key national projects.

On June 3, 2015, the Z05 main tower pier of the main bridge over the Guyu Gate waterway for the Fuping Railway’s Pingtan Strait Dual-Use Bridge—a key national project—successfully completed the concrete pouring of a 4.5-meter-diameter bored pile. This pile currently represents one of the largest-diameter foundation piles in the history of bridge construction. The drilling bit used for this borehole was custom-designed and manufactured by Luoyang Jiujiu Technology Co., Ltd., featuring an innovative structural design and robust welding techniques, which provided a solid foundation and ensured high-quality results for the smooth completion of Bored Pile No. 4 at the Z05 pier of the Pingtan Strait Dual-Use Cross-Sea Bridge. Additionally, all eight 4.5-meter-diameter drill bits and 20 4.0-meter-diameter drill bits supplied by our company were seamlessly integrated with the corresponding drilling rigs for this critical project.

2015-06-11

Warmest congratulations on the successful completion of our company's shareholding reform!

Our company, through a resolution passed at the shareholders' meeting on March 10, 2015, officially changed its name from "Luoyang Jiujiu Technology Development Co., Ltd." to "Luoyang Jiujiu Technology Joint-Stock Co., Ltd." The subsequent business registration update was completed on March 31, 2015, marking the official transformation of our company type from a "Limited Liability Company" to a "Joint-Stock Company."

2015-04-06