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China Global Mine High-Strength Steel Strand Lock - Single/Multi-Hole Support For Deep Mines | Jiufu Supplier,Manufacturer | Jiufu Mining Accessories

Global Mine High-Strength Steel Strand Lock – Single/Multi-Hole Support for Deep Mines | Jiufu

Deep underground mines, large-scale tunnel projects, and high-stress geological formations worldwide (from South African deep gold mines to Australian coal mines, from Russian permafrost mines to Southeast Asian metal mines) demand robust, reliable strand locking systems. Jiufu’s Global Mine High-Strength Steel Strand Lock delivers exceptional load-bearing capacity (150-500 KN) and anti-loosening performance, engineered to stabilize high-risk mining zones with single or multi-hole design options.


Details

Core Product Characteristics

1. Premium Material & Precision Craftsmanship

Crafted from high-grade 40Cr/45# alloy steel—selected for its superior tensile strength and anti-fatigue performance—the steel strand lock undergoes precision CNC machining and heat treatment. This ensures uniform structure, tight thread fit, and resistance to deformation under extreme loads. Available in single-hole (1-2 steel strands) and multi-hole (3-8 steel strands) designs, it’s compatible with global standard steel strand diameters (12.7mm-19.5mm), including the widely used 15.24mm and 17.8mm specifications. The lock body features a rugged, compact structure that minimizes installation space while maximizing load capacity.

2. Heavy-Duty Performance & Customizable Load Capacity

Engineered for deep mining and large-scale tunnel support, the strand lock offers customizable load capacity ranging from 150 KN to 500 KN—adapting to diverse project requirements from auxiliary support to primary load-bearing. Key performance highlights:
  • Yield strength ≥800 Mpa and ultimate tensile strength ≥1000 Mpa, ensuring reliable load transfer.
  • Anti-fatigue design withstands ≥10⁶ stress cycles, suitable for long-term use in high-vibration mining environments.
  • Self-locking nut with precision threads prevents loosening even under 5G+ vibration, eliminating support failure risks.
  • Working temperature range of -40℃ to 80℃, adapting to permafrost, high-temperature, and humid geological conditions.

3. Global Compliance & Corrosion Resistance

The product is ISO9001 certified and complies with international standards including ISO 898-1, ASTM A325, EU CE, Russian GOST, and Australian AS. To combat harsh mining environments, we offer two surface treatment options:
  • Hot-dip galvanizing (430-600g/㎡): Meets ISO 12944 C5-M corrosion resistance standards, ideal for humid underground mines.
  • Epoxy coating: Provides superior protection against salt spray, chemical erosion, and acidic mine water—perfect for coastal or corrosive mining sites.

4. Easy Installation & Universal Adaptability

Designed for on-site efficiency, the steel strand lock requires no special tools or complex training. Installation steps are streamlined: thread the steel strand through the lock hole, apply thread lubricant, and tighten the self-locking nut with a calibrated torque wrench (150-250 N·m). It’s compatible with common mining and construction equipment, reducing downtime and labor costs. The universal design ensures seamless integration with existing anchor cable systems, making it a versatile choice for retrofits and new projects alike.
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Core Parameters Standard Specifications Customization Options Global compatibility standards Performance Specifications
Number of holes/slots Single hole (1-2 strands), Multi-hole (3-6 strands) Single-strand (1-4 strands), Multi-strand (3-8 strands) ISO 898-1, ASTM A325, CE Load Capacity: 150-500 KN
Compatible steel strand diameter 15.24mm, 17.8mm 12.7mm-19.5mm Australian AS and South African SANS  Pull-out Resistance: ≥1.2 × Rated Load
Lock body material 40Cr/45# Alloy Steel Custom high-strength alloy steel Russian GOST and Vietnamese TCVN standards Yield Strength: ≥800 MPa
Surface treatment Hot-dip galvanized (430g/㎡) Hot-dip galvanized (430-600g/㎡), Epoxy coating Corrosion resistance rating: C5-M (ISO 12944) Fatigue Life: ≥10^6 cycles
Dimensions (diameter × height) 80×50mm (single hole), 120×80mm (multi-hole) 60×40mm~150×100mm --- Operating Temperature: -40℃~80℃
Multi-Hole Heavy-Duty Support

Global Application Scenarios

Our High-Strength Steel Strand Lock excels in heavy-duty support across global mining and infrastructure projects:

1. Deep Mining Support

  • South African gold mines: High-stress rock mass stabilization with 400-500 KN multi-hole locks.
  • Australian coal mines: Humid environment adaptation with epoxy-coated single-hole locks for tunnel roof support.
  • Russian permafrost mines: Low-temperature resistant locks (-40℃ rated) for vertical shaft and inclined roadway support.
  • Chinese deep metal mines: Custom multi-hole locks for high-risk mining zone reinforcement.

2. Large-Scale Tunnel Engineering

  • European railway tunnels: CE-certified multi-hole locks for transverse prestressing and tunnel lining reinforcement.
  • Southeast Asian highway tunnels: Corrosion-resistant locks for broken rock zone support in humid climates.
  • North American infrastructure: ASTM-compliant locks for bridge foundation and deep foundation pit anchoring.

3. Mine Shaft & Hydropower Projects

  • Vertical mine shafts: Heavy-duty single-hole locks for shaft wall stabilization and equipment anchoring.
  • Hydropower dams: Corrosion-resistant multi-hole locks for slope stabilization and dam body reinforcement.
  • Port & coastal projects: Epoxy-coated locks for coastal revetment and offshore platform auxiliary support.

Key Advantages

  1. Exceptional Safety Factor: Even if one steel strand’s anchoring effect is lost, the multi-hole design prevents overall system failure—ensuring critical support continuity in high-risk environments.
  2. Long Service Life: Anti-fatigue and corrosion-resistant properties extend service life to ≥20 years, reducing maintenance and replacement costs for long-term projects.
  3. Global Standard Compliance: Meets regional standards worldwide, eliminating rework and compatibility issues for cross-border projects.
  4. Cost-Effective Efficiency: Easy installation cuts on-site labor time by 30% vs. complex locking systems; customizable specifications avoid over-engineering and material waste.
  5. Environmental Friendliness: No harmful substances are released during production or use, complying with global environmental protection regulations for mining projects.

Customization Service

We understand that global projects have unique requirements—our comprehensive customization service ensures the steel strand lock perfectly matches your needs:
  • Core Customizations: Hole count (1-4 single-hole, 3-8 multi-hole), load capacity (150-500 KN), compatible steel strand diameter (12.7-19.5mm), and lock body size (60×40mm~150×100mm).
  • Surface Treatment Options: Custom hot-dip galvanizing thickness or epoxy coating color for specific environmental conditions.
  • Packaging & Labeling: Custom logo, moisture-proof cartons, and palletization for long-distance shipping; multilingual technical documents for local compliance.
  • Custom Process: Send your requirements (drawings/samples) → Get a detailed quote within 24h → Confirm sample (free for orders over 500pcs) → Mass production → Global delivery with tracking.

Global Shipping & After-Sales Support

  • Shipping Terms: Support FOB (Tianjin Port), CIF, CFR, DDU, and DDP. We offer heavy-duty, anti-collision packaging to protect lock bodies during long-distance shipping. Delivery times: 7-30 days (Europe: 12 days, Africa: 18 days, Southeast Asia: 10 days, North America: 15 days).
  • Payment Methods: Accept TT, L/C, Trade Assurance, Credit Card, and Western Union for flexible global transactions.
  • After-Sales Service: 24/7 technical support via WhatsApp/email; free replacement for defective products within 1 year; on-site installation guidance and training (English/Spanish/Russian/Vietnamese) for orders over 2000pcs; lifetime technical consultation for project optimization.

Quality Control

Jiufu adheres to a strict quality management system, with rigorous inspections at every stage of production:
  1. Raw material inspection: Chemical composition and mechanical performance testing for 40Cr/45# alloy steel to ensure compliance with standards.
  2. Production process control: Precision machining monitoring, thread fit testing, and heat treatment temperature tracking.
  3. Finished product testing: Load capacity verification (hydraulic jack test), anti-fatigue testing, corrosion resistance testing (salt spray test ≥800 hours), and dimensional accuracy inspection.
  4. Packaging inspection: Anti-collision and moisture-proof checks to ensure products arrive in perfect condition.

 

Why Choose Jiufu’s Steel Strand Lock?

With annual sales of 50 million US dollars and 12,000 tons of products exported globally, Jiufu combines decades of mining support expertise with a customer-centric approach. Our Global Mine High-Strength Steel Strand Lock stands out for its heavy-duty performance, global compliance, and customization capability—trusted by leading mining companies and engineering firms worldwide.
Whether you’re working on a deep gold mine in South Africa, a railway tunnel in Europe, or a permafrost shaft in Russia, we deliver tailored support solutions that exceed expectations. Contact us today to request a sample, get a customized quote, or discuss your project’s specific needs—let Jiufu be your reliable partner for global geotechnical support.
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    Hebei Jiufu Industrial and Mining Accessories Co., Ltd.

    The company adheres to the core business philosophy of "integrity-based, customer first" and provides attentive services to customers across the country, winning the trust and praise of the majority of users. In the days to come, all employees of Jiufu will continue to work hard, pioneer and innovate, and create sustained value for all new and old customers.
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