The high-strength bolt testing machine is equipped with parameter backup and recovery functions, automatic calibration, peak value holding monitoring, and sensor overload protection for enhanced safety. It is also fitted with an RS232 communication interface, enabling connection to a computer for data transfer, analysis, and report generation (optional software required).It is widely used in steel structure manufacturing enterprises, fastener manufacturers, third-party testing laboratories, as well as research institutes and universities.

Semi-Automatic High-Strength Bolt Testing Machine

Model:TDLS-500B

I. Product Introduction

The Semi-Automatic High-Strength Bolt Testing Machine is designed and manufactured in accordance with the requirements of GB 50205 “Code for Acceptance of Construction Quality of Steel Structures”, and it also complies with international reference standards such as ISO 16047 and EN 14399-2 for torque/clamp force testing methods.

This equipment is used for testing the axial force, tightening torque, and torque coefficient of large hexagon high-strength bolt assemblies (M16, M20, M22, M24, M27, M30). It features automatic data display, automatic calculation, and automatic printing of test reports.

II. Technical Specifications

Power Supply: AC 220V

Axial Force Range: 20–500 kN

Torque Range: 10–2000 N·m

Bolt Sizes: M16, M20, M22, M24, M27, M30

Bolt Length: 60–280 mm

Axial Force Accuracy: ±1.0%

Torque Accuracy: ±1.0%

Data Storage: 32 Test Groups

Communication: RS232 Interface

Statistical Functions: Average, Standard Deviation, CV

Display: Digital LCD Display

III. Features and Benefits

1. High-Precision Measurement

The machine accurately measures:

Axial Force

Tightening Torque

Torque Coefficient

Measurement accuracy reaches ±1.0% for both axial force and torque.

2. Horizontal Ergonomic Design

The horizontal machine structure provides:

Safe operation

Easy specimen installation

Comfortable working position

Improved testing efficiency

3. Linear Guide Testing Module

The torque and tension testing module is mounted on precision linear guide rails, allowing quick specimen positioning while reducing installation errors.

4. One-Button Automatic Testing

The user-friendly control software enables one-click operation. After the specimen is installed, the testing procedure is completed automatically.

5. Stable Speed Loading System

A geared motor provides constant-speed loading, significantly improving:

Test repeatability

Measurement consistency

Data reliability

6. Intelligent Statistical Analysis

After completing one batch of tests, the system automatically calculates:

Average Axial Force

Average Torque

Average Torque Coefficient

Standard Deviation

Coefficient of Variation (CV)

No manual calculation is required.

7. Data Storage and Printing

The controller can continuously store 32 groups of test records.

Functions include:

Data review

Report printing

Automatic calculation

Parameter backup and recovery

IV. Applications

This equipment is suitable for the following industries and organizations:

Steel structure manufacturing enterprises

High-strength bolt manufacturers

Engineering quality inspection centers

Third-party testing laboratories

Construction and engineering companies

Wind power tower manufacturing industry

Bridge and railway engineering projects

Universities and research institutes

V. FAQ

1. What types of bolts can be tested?

The machine is designed for large hexagon high-strength structural bolt assemblies with sizes from M16 to M30.

2. What testing parameters can the machine measure?

It measures:

Axial Force

Tightening Torque

Torque Coefficient

The system also automatically calculates average values, standard deviation, and coefficient of variation.

3. Is the testing process fully automatic?

The machine is semi-automatic. Operators manually install the specimen, while the testing process, data acquisition, calculation, and result display are completed automatically.

4. Can the testing data be transferred to a computer?

Yes. The machine is equipped with an RS232 communication interface, allowing test data to be transferred to a computer for report generation and further analysis. Optional software is available upon request.

5. Which industries commonly use this machine?

The machine is widely used in:

Steel structure manufacturing

Construction quality inspection

Bolt manufacturing

Wind power projects

Bridge construction

Universities

Research institutes

Third-party testing laboratories