Seamless boiler tubes are a type of steel pipe specially designed for high-temperature and high-pressure environments. Its manufacturing process is unique, ensuring the stability and durability of the pipe under extreme conditions. According to the differences in materials and manufacturing processes, it is mainly divided into the following categories:
1. Carbon steel seamless pipe: With carbon as the main alloying element, it features excellent strength and toughness, and is suitable for medium temperature and pressure environments.
2. Alloy steel boiler tubes: On the basis of carbon steel, other alloying elements (such as chromium, molybdenum, nickel, etc.) are added to enhance the high-temperature resistance and corrosion resistance of the tubes.
3. Stainless steel seamless tubes: Mainly composed of elements such as chromium and nickel, they possess excellent corrosion resistance and high-temperature strength, making them particularly suitable for boiler systems with extremely high material requirements.
The inspection standards for seamless boiler tubes usually follow a series of strict regulations to ensure the quality and safety of the pipes.
1. Visual inspection
The surface of the steel tubes should be smooth, free of cracks, folds, inclusions, double skins and other defects.
The end face of the pipe should be flat and free of burrs.
2. Dimensional inspection:
Measure the outer diameter, wall thickness and other dimensions of the pipeline to ensure they meet the design requirements and relevant standards.
3. Material Inspection:
Confirm the material of the pipeline, such as carbon steel, alloy steel, etc., as well as the specific chemical composition and mechanical properties.
4. Non-destructive testing:
Our factory will use methods such as ultrasonic testing and radiographic testing to inspect whether there are defects such as cracks and inclusions inside the pipelines.
5. Hydraulic test:
Conduct a hydraulic test on the pipeline to check its sealing performance and pressure-bearing capacity.
6. Eddy current testing:
It is used to detect tiny cracks, corrosion and other defects on the surface of pipelines.
7. Chemical Composition Analysis:
Conduct chemical composition analysis on the pipeline materials to ensure compliance with relevant standards.
8. Mechanical property test:
Conduct tensile tests, impact tests, etc., to evaluate the mechanical properties of the pipeline.
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