ST Machineries, with over 26 years of industry experience, is a leading manufacturer of tube‑making machinery, offering comprehensive end‑to‑end solutions from custom design and precision manufacturing to installation, training, and ongoing support to customers worldwide.
The company’s product portfolio includes a full range of tube mill equipment such as stainless steel tube mills (including decorative and industrial models), high‑frequency tube mills, titanium tube mills, aluminum tube mills, as well as auxiliary equipment (e.g., tube welding, cutting, polishing machines), tooling sets, and coil handling systems, providing efficient and precise tube production solutions for various materials and applications.
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Parameter |
Specification |
|
Detection Method |
Eddy current non-destructive testing (NDT) |
|
Detection Object |
Steel tubes and pipes |
|
Tube Shape |
Round, square, and rectangular tubes |
|
Detection Frequency |
Adjustable wide frequency range |
|
Detection Channels |
Multi-channel detection supported |
|
Sensitivity Control |
Adjustable gain and phase control |
|
Detection Speed |
High-speed online inspection |
|
Defect Type |
Surface and near-surface cracks, holes, and flaws |
|
Operation Mode |
Automatic continuous inspection |
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Alarm System |
Sound and light alarm with defect marking |
|
Display System |
Real-time signal waveform and defect display |
|
Application Environment |
Production lines and quality inspection stations |

Highly sensitive for detecting surface and near-surface material changes, voids, or defects.
Fast execution due to minimal prep time, portable equipment, and high area coverage, resulting in minimal asset downtime.
Doesn’t require direct contact with the test piece. Inspection probes can be mounted to drones to work at heights.
Directly control the depth of eddy current penetration for inspecting different material thicknesses.
Immediate, accurate results and visual reporting on asset condition, allowing fast follow-up action.
Environmentally friendly. Doesn’t use chemical penetrants or gamma rays, which can harm workers.
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Industries |
Defect types |
Assets |
|
1. Aerospace |
1. Cracks |
1. Conductive parts |
Eddy current testing is a nondestructive testing (NDT) method that can be used for various inspection and detection applications. Eddy current inspections work using an electromagnetic field to measure the response from a material. Eddy current testing equipment generates magnetic fields, which induce a current that flows in a test piece (e.g., a conductor such as a coil). This influences the magnetic field, as well as the magnitude and phase of voltage in the coil. Any changes in conductivity, such as defects or thickness differences, can affect the resulting eddy current. This technology can then be used to measure distance or to detect flaws in conducting materials such as corrosion, erosion, wear, pitting, baffle cuts, wall loss, and cracks.

Delivery Information
Shipping Methods
We offer a variety of shipping options, including sea freight, air freight, railway transportation, and international express delivery, to meet the diverse needs of our customers.
Estimated Delivery Time
We will provide you with the estimated delivery time for your order, which will be clearly stated in the formal order to ensure your rights are protected, allowing you to arrange for the receipt of your goods in a timely manner.
Order Tracking
We provide order tracking services, allowing you to stay informed about the current status and expected arrival time of your order. Detailed inspection information and shipping manifests, including photos and videos, are provided to ensure the security of your transactions.

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