Glass Fiber Reinforced Plastic (GRP) Bars are composed of high-performance resins and high strength glass fiber. These are an alternative to steel elements when used in underground construction. GRP bars are used as cuttable bolts for rock support, forepoling and as temporary reinforcement which can be easily removed later by tunnel boring machines or excavators. GRP bars are available up to a maximum length of 11.80m. All accessories are available in GRP.

GRP Bar Types

• Type CS - Fully Threaded Solid GRP Bar
• Type CH - Fully Threaded GRP Hollow Bar
• Type CR - Fully Threaded GRP self-drilling hollow bars (for rotary drilling with high torque needs)
• Smooth bar
• GRP Mesh