Thread hollow bar supporting method has many prominent effect, such as improving support effect, lowering cost, fastening construction speed, reducing freight volume, relieving labor intensity, enhancing use ratio of tunnel cross-section, etc. The craft of hollow bar is easy to be operated, working procedure is joined compactly, materials and equipment are light, installation and operation are convenient, drilling speed is fast and hole-forming ratio is high. Here at Sinorock, we believe in making hollow bar products that solve problems, and we are dedicated to investing in companies that will help us accomplish this mission. In keeping with our time-proven formula for success, new additions to the Sinorock family are often developed alongside their original owners to ensure that we stay true to their original vision. We work to build upon their accomplishments and use our financial strength and resources to help them meet their full potential. These relationships help us expand and innovate into exciting new markets, helping each other along the way.
