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HEBEI JIUFU INDUSTRIAL AND MINING ACCESSORIES CO., LTD.

SNIEC E5.189

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Friction bolt

Product Category: Roof for roadways supports

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Product Introduction

Friction bolts are specialized ground support products widely used for roof reinforcement in underground copper and gold mines, as well as in various other engineering applications.Friction bolt consists of a "C"-shaped tube made of high-strength steel, which is pressed into a borehole with a diameter smaller than the tube's outer diameter; this allows for the transfer of loads from the steel tube to the rock mass. A steel ring is fixed to the outer end (the end at the borehole collar) to secure a bearing plate after installation, thereby applying a pretension force to the rock mass.These products are available with either a black (uncoated) or hot-dip galvanized finish. They come in diameters of 34 mm, 40 mm, and 47 mm, with lengths ranging from 600 mm to 3000 mm. Frequently used in both development and production headings within mines, they offer immediate ground support and are simple to install.

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