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Bolt method Product List

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Rock Bolt Method "ST Rock Bolt"

Rock Bolt Method "ST Rock Bolt"

Rock Bolt Method "ST Rock Bolt"

This is a reinforcement material (rock bolt) designed for permanent slopes treated with corrosion protection for screw-type steel bars. By inserting the ST rock bolt into the ground, it enhances the stability of the entire slope through interaction with the ground. 【Features】 - Reinforcement material suitable for permanent slopes due to heavy corrosion protection treatment - Applicable for soil pressure-resistant slope protection works and small to medium-scale collapse countermeasures - Suitable for countermeasures against collapse during temporary steep excavation or steep cut slopes. ● For other functions and details, please contact us.

  • Reinforcement and repair materials
  • Bridge Construction

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Rock Bolt Method "SP Leg Drill Method (≤3.0m)"

Rock Bolt Method "SP Leg Drill Method (≤3.0m)"

Active two-directional pressure injection for reliable full adhesion!

In areas where access is difficult and the boreholes cannot stand independently, the leg drill method using rope scaffolding has been widely used. In contrast, the "SP Leg Drill" actively employs "two-directional pressure injection," enabling the installation of permanent bolts up to 3.0 meters even in ground where the boreholes cannot stand independently. Additionally, this pressure injection can be applied for the repair of aging slope protection structures. 【Features】 - Economical short-length rock bolts for ground where boreholes cannot stand independently - Reliable anchoring achieved through pressure injection For more details, please contact us or download the catalog.

  • Earth retaining wall/foundation reinforcement
  • Earthworks

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Rock Bolt Method "SP Soil Nail - SR Type"

Rock Bolt Method "SP Soil Nail - SR Type"

Achieving a large restraining force by inserting indented PC steel wire.

The "SP Soil Nail - SR Type" is based on the conventional "SP Soil Nail" but further improves the tensile strength of the core material. It features a unique design where PC steel wire, which has been processed with indentations to enhance adhesion, is inserted after the main wire, making it an economically superior Strand Reinforce (SR) type of simple double-tube high-strength rock bolt method that can also be proposed for partial areas of permanent anchors. 【Features】 ○ Significantly increased strength providing anchor-like restraining force ○ Insertion of PC steel wire after bolt installation For more details, please contact us or download the catalog.

  • Earth retaining wall/foundation reinforcement
  • Earthworks
  • Pile and foundation work

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Rock Bolt Method "SP Anchor Method (Self-Drilling Bolt)"

Rock Bolt Method "SP Anchor Method (Self-Drilling Bolt)"

It is a self-drilling rock bolt that can be used as a lock bolt without modification.

Rock bolts are widely used in tunnel support work and slope reinforcement work in mountainous areas. Among these, particularly in cases where the ground does not support the hole walls or on steep slopes, self-drilling rock bolts that can be used directly as rock bolts with drilling rods have become popular to improve workability. Esty Engineering Co., Ltd. has recently completed the development of the self-drilling rock bolt "SP Anchor," which pursues improved workability and thorough cost-effectiveness. We sincerely hope for your wide utilization of this product. 【Components】 ○ SP Bit ○ SP Bolt (Hollow rolled screw steel bar) ○ SP Coupler ○ SP Nut For more details, please contact us or download the catalog.

  • Earth retaining wall/foundation reinforcement
  • Earthworks

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Injection-type original design rock bolt method "SP Soil Nail"

Injection-type original design rock bolt method "SP Soil Nail"

It achieves "high speed," "simplicity," and "low cost" compared to the conventional double-tube drilling method.

"SP Soil Nail" achieves "high speed," "simplicity," and "low cost" compared to the conventional double-tube drilling method. Compared to the traditional double-tube method using anchor machines, the components are lightweight, eliminating the need for rod retrieval and core material installation, enabling labor-saving and high-speed construction. The pressurized injection effect of SP Soil Nail has been verified through tests such as "excavation tests." 【Features】 ○ High-speed, labor-saving construction ○ Reliable anchoring achieved through pressurized injection For more details, please contact us or download the catalog.

  • Earth retaining wall/foundation reinforcement
  • Earthworks
  • Pile and foundation work

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