Fenghui Machinery Parts Xianxian Co., Ltd., our company is a precision casting manufacturer, using wax loss method precision casting, mainly produces automotive parts, building accessories, anchor accessories. Our factory is located in Cangzhou City, Hebei Province, China.Primary business in manufacturing and selling rock support thread bars. Expansion shell.Kiruna bolt.Kinds of Grouting hollow thread bar, reinforcing steel bar, Hex Dome Nut. Beside of selling at domestic china markets, also export to Euro, North America, South America, Australia. Annual production output got to exceed to 1000 metric tons.

In addition to the use of chemical anchoring material to obtain the pre-stressing of rock bolt, the mechanical expansion shell with easier installation and high performance of anchor loading is also one of the bolting solutions on site. In particular, if water mergers after bore holing of rock bolt, an expansion shell can be attached onto a full-threaded rock bolt, which is then placed at the required depth of borehole and rotated by a drill machine or hand-held hammer in order to obtain immediate loading capacity for anchoring.