Bolt Torque Tester
Bolt Torque Tester is a precision instrument designed to verify the tightening force and preload performance of high-strength bolts used in structural applications. The Fully Automatic LS-500B model, developed by our factory, supports M16–M30 bolt specifications and complies with GB50205-2020 “Steel Structure Engineering Quality Control Regulation.” It accurately measures torque, clamping force, and axial consistency, ensuring structural safety and engineering reliability.
Equipped with a smart display and automated control system, the LS-500B enables real-time monitoring, automatic resetting, and instant report printing. Its high-precision sensors eliminate manual error and improve result repeatability. The system also features auto data logging, quick preload evaluation, and built-in reporting—making it highly suitable for quality control laboratories, production lines, and engineering sites where speed, accuracy, and standard compliance are critical.
🎥 Bolt Torque Tester Demo
🖼️ Product Gallery
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⚙️ Product Features
🌍 Application Areas
🏗️ Steel structure assembly verification — Ensures each bolt meets design torque and preload standards, critical for buildings, bridges, and towers.
🏭 Factory production line inspection — Rapid and automatic testing of bolt performance in mass production environments, minimizing error and improving consistency.
🔧 On-site construction safety checks — Used during and after bolt installation to verify mechanical tightness and prevent future failures.
📊 Engineering quality assurance — Applied in laboratories and QA departments to generate traceable, standardized reports for bolt compliance documentation.
📊 Technical Specifications
| Output Type | Resistive, Inductive + Capacitive |
| Voltage Output | 0~275V |
| Current Output | 1~63A |
| Counter | 0~999999 |
| Power Supply | AC220V/50Hz/30A |
| Capacitor Load A | 70uF + 140uF |
| Load B | 7.3uF capacitor + 0.5H inductor |
| Power Factor | 0.6–0.98 (above 16A) / 0.3–0.98 (below 16A) |
| Dimensions | 2100×600×1450 mm |
| Weight | 500 kg |
❓ Frequently Asked Questions
Does it support multiple bolt sizes?
Yes, the system supports M16–M30 bolt ranges.
Can I print reports automatically?
Yes, reports are generated and printable instantly after tests.
Is it suitable for factory production line use?
Yes, it’s fully automated and ideal for industrial batch inspections.
💡 Why Choose Us?
Tianchang Tongda Instruments Co., Ltd. is a trusted testing equipment manufacturer in China with over 20 years of experience in industrial testing and quality control.
We specialize in high-precision equipment for pipelines, steel structures, rebar, cables, insulation materials, and more. Our instruments are widely used in laboratories, manufacturing plants, universities, and third-party inspection agencies.
As an ISO-certified company, we ensure that all products comply with international standards such as ISO, ASTM, and EN. From installation to remote support, we offer reliable service and long-term technical assistance.
Our sales network covers all provinces in China and continues to expand globally. Clients in Southeast Asia, the Middle East, and Europe rely on us for precise and efficient testing solutions.
- ✅ Over 20 years of manufacturing experience
- ✅ Compliant with ISO, ASTM, and EN standards
- ✅ Adopted by top laboratories and research centers
- ✅ Comprehensive after-sales support and fast delivery
- ✅ Customized testing solutions tailored to your needs
Need a Quote or Consultation?
Contact us now to find the right model for your bolt torque inspection tasks.
📦 Global delivery available.
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