Slotted Tube Friction Rock Bolt , Split Set Bolt For Coal Mine / Underground

MOQ： 10PCS
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Payment Terms	T/T
Supply Ability	3000 PCS Per month
Delivery Time	7-15 days
Packaging Details	Wooden Box
Product Name	Slotted Pipe Friction Anchor Bolt
Product Type	Rock and Soil Anchoring Support Component
Structural Features	Slotted pipe body, friction anchoring
Anchoring Method	Immediate anchoring, no anchoring agent required
Material	High-strength alloy steel pipe
Performance Characteristics	High adaptability, quick installation, high conformity to surrounding rock
Applicable Scenarios	Mine roadways, tunnel engineering, slope support, temporary support
Product Advantages	Immediate load-bearing capacity, high construction efficiency, wide applicability, safe and reliable
Brand Name	HLDRILL
Place of Origin	CHINA
Certification	ISO9001

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Product Details
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Product Specification


Payment Terms	T/T	Supply Ability	3000 PCS Per month
Delivery Time	7-15 days	Packaging Details	Wooden Box
Product Name	Slotted Pipe Friction Anchor Bolt	Product Type	Rock and Soil Anchoring Support Component
Structural Features	Slotted pipe body, friction anchoring	Anchoring Method	Immediate anchoring, no anchoring agent required
Material	High-strength alloy steel pipe	Performance Characteristics	High adaptability, quick installation, high conformity to surrounding rock
Applicable Scenarios	Mine roadways, tunnel engineering, slope support, temporary support	Product Advantages	Immediate load-bearing capacity, high construction efficiency, wide applicability, safe and reliable
Brand Name	HLDRILL	Place of Origin	CHINA
Certification	ISO9001
High Light	Friction Rock Bolt ，Slotted Tube Rock Bolt ，Coal Mine Split Set Bolt

Slotted Tube Friction Rock Bolt | Immediate Anchoring & High Adaptability

Slotted pipe anchors, also known as open-type anchors or split set bolts, are full-length friction anchors used in mining and tunnel support applications. These innovative support systems achieve reliable anchoring through pressure and friction between the anchor body and borehole wall, eliminating the need for resin or cement cartridges. Installation provides immediate anchoring and load-bearing capacity, making them a widely used active support solution in coal mines, metal mines, tunnels, and slope protection projects.

Structural Design

Constructed from high-strength cold-rolled steel strip through precision rolling and welding processes
Cylindrical rod body featuring a longitudinal slit structure for optimal compression
Tapered guide head at one end for smooth and easy insertion into boreholes

Working Principle

Anchor bolt diameter is slightly larger than the borehole diameter for secure fit
Forcibly driven into borehole using rock drills or specialized anchor bolting machines
Slotted pipe compresses and contracts, generating continuous elastic tension
Forms full-length friction anchor with borehole wall for maximum stability

Core Advantages

Quick Installation: Direct insertion without mixing or hardening requirements
Instant Anchoring: Provides immediate support upon installation
Full-Length Anchoring: Entire rod under load for reliable support distribution
High Adaptability: Suitable for soft rock, fractured formations, and coal seams
Vibration Resistance: Enhanced stability with increased surrounding rock deformation
Cost-Effective: Low material cost with high construction efficiency

Application Scenarios

Roof and sidewall support in coal mine underground roadways
Roadway support in metal and non-metal mining operations
Initial and temporary tunnel support systems
Slope reinforcement and foundation pit support
Support in areas with fractured surrounding rock, soft rock, and complex geological conditions

Technical Specifications: Outer diameter 45mm, seam width 10-20mm

Company Details

Bronze Gleitlager

Bronze Sleeve Bushings

and

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from Quality China Factory

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Business Type:

Manufacturer,Exporter,Trading Company,Seller,Other 
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Year Established:

2018 


Total Annual:

10000000-30000000


Employee Number:

30~50 


Ecer Certification：

Verified Supplier 

HENGLONG is an internationally recognized and leading producer of superior percussive rock drilling tools.Our high performance products include top hammer drill bits extension and tunneling rods,integral and tapered rods,shank adapters,coupling,drag bits,blast furnace tapping tools,self dr... HENGLONG is an internationally recognized and leading producer of superior percussive rock drilling tools.Our high performance products include top hammer drill bits extension and tunneling rods,integral and tapered rods,shank adapters,coupling,drag bits,blast furnace tapping tools,self dr...

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Yanggu Henglong Construction Machinery Co., Ltd.
4F,6# Building,No.19 Hunan Road,Liaocheng City,Shangdong province,China
https://www.drillbuttonbit.com/

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