Company Development History

• 2011: General Manager Cai Rongqiang founded Chiping Dingli Steel Bar Connection Sleeve Manufacturing Co., Ltd. from scratch.

• 2013: Chiping Dingli was officially recognized as a tax-paying enterprise.

• 2016: Chiping Dingli became a supplier for the Qinshan Phase III Nuclear Power Plant Project of China Nuclear Power Engineering Corporation, providing connection sleeves, connection machinery, and on-site engineering contracting services.

• 2017: Following China Metallurgical Group 21st Construction Co., Ltd.,Chiping Dingli officially expanded overseas and entered the Sri Lankan market.

• 2018:Chiping Dingli became a supplier to Saudi Arabia’s second-largest construction company.

• 2018:Chiping Dingli became the sole sleeve supplier for the renovation project of Incheon International Airport in South Korea.

• 2019: Chiping Dingli added a fully automated production line workshop,completed the design for fully automated sleeve processing, and evolved into a factory capable of meeting the production needs of high-end customers.

• 2020: Chiping Dingli developed fully automated production machinery complying with European CE standards, becoming a professional manufacturer in the industry that produces both machinery and sleeves.

• 2021: Chiping Dingli developed a tapered thread system, successfully sold the product to Russia, and became the largest supplier of tapered thread products in the Russian market.

• 2021: Chiping Dingli developed a quick-connect sleeve, which enables steel bar butt connection within 15 seconds, pioneering a new steel bar connection technology.

• 2022: Chiping Dingli expanded its factory building by over 10,000 square meters, with a plan to add more than 80 sets of equipment.

We are a sleeve manufacturing factory—we specialize solely in producing steel bar connection products. However, we are more than just a production factory: we also engage in the R&D of steel bar connection technologies, the manufacturing of steel bar connection machinery, and the continuous innovation of sleeve quality. We set strict requirements for every detail and delve deeply into the technology of steel bar connection products!

We measure our actions by morality and secure our survival with quality.