Mechanical Automatic Metal Testing Machine, Color : Customized

1. Equipment Overview

The Steel Pipe Air Tightness Testing Machine is a specialized inspection device used to evaluate the sealing performance of steel pipes, welded pipes, and stainless steel tubes. By introducing compressed gas (typically air or inert gas) into the pipe under a specified pressure, the system detects leaks caused by welding defects, pinholes, cracks, or other imperfections that may affect airtightness.

This equipment is widely applied in stainless steel welded pipe production lines, precision tube manufacturing, automotive piping systems, heat exchanger tubes, and fluid transportation pipelines where high airtightness is required.

2. Working Principle

The air tightness testing machine operates based on pressure decay or differential pressure detection principles. A typical testing cycle includes:

1. Automatic sealing and clamping of both pipe ends

2. Gas filling and pressurization to a preset value

3. Pressure holding and leak monitoring

4. Automatic judgment of pass/fail results

5. Pressure release and unloading of the tested pipe

Any leakage caused by weld discontinuity, porosity, or micro-cracks can be accurately identified through pressure variation or leakage rate analysis.

3. Main Features

• High Detection Accuracy: Capable of detecting micro-leaks and weld defects

• High Automation Level: Supports automatic loading, clamping, testing, and unloading

• Fast Testing Speed: Suitable for both online and offline inspection in continuous production lines

• User-Friendly Operation: Touchscreen HMI with intuitive parameter settings

• Stable & Reliable Performance: Durable sealing components designed for long-term operation

• Strong Traceability: Supports data recording, storage, and export for quality tracking

4. Application Scope

The steel pipe air tightness testing machine is suitable for various pipe materials and specifications, including:

• Stainless steel welded pipes (round, square, rectangular)

• Carbon steel pipes and alloy steel pipes

• Precision tubes and thin-walled pipes

• Pipe diameter range: Φ10 mm – Φ630 mm (customizable)

• Pipe length: customizable according to customer requirements

5. Typical Industries

• Stainless steel welded pipe manufacturing lines

• Petrochemical and fluid transportation industries

• Automotive exhaust and piping systems

• Heat exchanger and boiler tube manufacturing

• Food, pharmaceutical, and sanitary pipeline systems

6. Optional Configurations

• Helium leak detection or high-sensitivity differential pressure testing

• Automatic loading/unloading and production line integration

• Barcode or QR code-based test data binding

• Quick-change tooling for multiple pipe sizes

• Remote monitoring and data communication interfaces

7. Quality Control Advantages

Air tightness testing effectively prevents defective pipes with leakage risks from entering downstream processes, significantly improving product quality and operational safety. It is an essential quality control solution for modern, high-end welded pipe production lines.