The casing is a high-end product produced by steel pipes. There are many types of bushings and there are 15 bushing diameter specifications. The outer diameter range is 114.3-508mm; the steel grade is divided into J55, K55, N80, L-80, P-110, C-90, C-95, T-95, etc.; the casing end buckle type and various requirements, Button type STC, LC, BC, VAM, etc. can be processed. The casing production and installation process involves a large number of tests, mainly in the following aspects:


1, ultrasonic testing
When ultrasonic waves propagate in the material to be tested, changes in the acoustic properties and internal structure of the material have an effect on the propagation of the ultrasonic waves. Detect by the degree and condition of the ultrasonic waves to understand changes in material properties and structure.


2. Radiation detection
Radiographic inspection uses the difference in the amount of radiation transmitted between the normal position and the defect location, resulting in a difference in substrate blackness.


3. Penetration test
Penetration testing utilizes the capillary action of a liquid to penetrate the permeate into open defects on the surface of the solid material and then pull the permeate through the developer onto the surface to reveal the presence of defects.


Penetration testing is applicable to a wide variety of metal and ceramic workpieces. The time from osmotic operation to defect display is relatively short, typically about half an hour, to detect surface fatigue, stress corrosion and weld cracks, and to directly measure crack size.


4, magnetic particle testing
Magnetic particle inspection uses magnetic flux leakage from the defect to absorb magnetic powder and form magnetic marks to provide defects. Surface and subsurface defects can be detected. The nature of the defect is easily identifiable. Paint and plating surfaces do not affect detection sensitivity.


5, eddy current testing
Eddy current testing mainly uses the eddy current induced by the ferromagnetic coil inside the workpiece to analyze the internal quality of the workpiece. Surface and near surface defects of various conductive materials can be detected. Usually parameter control is difficult, test results are difficult to interpret, and test objects are needed. It must be a conductive crack and indirectly measure the length of the defect.


6, magnetic flux leakage detection
Casing magnetic flux leakage detection is based on the high magnetic permeability properties of ferromagnetic materials. The quality of the in-service casing can be detected by measuring the change in permeability caused by defects in the ferromagnetic material.


7, magnetic memory detection
Magnetic memory detection is the relationship between the physical properties of magnetic phenomena and metal dislocation processes. It has the advantages of high efficiency, low cost and no need for grinding. It has an important and broad application prospect in the industry.


Among several detection methods, there is no specific standard for magnetic memory testing of products, which has yet to be developed. The remaining six types have their own test criteria and are relatively mature.

Casing is a high-end product for steel pipe production. There are many types of casing, and there are 15 kinds of casing diameter specifications. External diameter range is 114.3-508mm; steel types are J55, K55, N80, L-80, P-110, C-90, C-95, T-95, etc. 11 kinds; casing end buckle type and various types of requirements, Machinable button STC, LC, BC, VAM equation. Casing production and installation process involves a large number of tests, mainly the following:


1. Ultrasound detection
When the ultrasonic wave propagates in the material to be tested, the changes of the acoustic characteristics and internal structure of the material have an effect on the propagation of the ultrasonic wave. Through the degree and condition of ultrasonic testing, we can understand the change of material properties and structure.


2. Radiographic Detection
Radiographic examination of the difference in the amount of radiation transmitted between the normal and defective parts results in the difference in blackness on the substrate.


3. Penetration test
Penetration testing is to use the capillary effect of liquid to penetrate the penetrant into the open defects on the surface of solid materials, and then to attract the penetrant to the surface through the developer to show the existence of defects.


Permeation test is suitable for all kinds of metal and ceramic workpieces. The time from penetration operation to defect display is relatively short, generally about half an hour. Surface fatigue, stress corrosion and welding cracks can be detected, and crack size can be measured directly.


4. Magnetic Particle Detection
Magnetic particle detection uses flux leakage at defect sites to absorb magnetic particles and form magnetic traces to provide defect indication. It can detect surface and subsurface defects. The nature of defects is easy to identify. Coatings and electroplated surfaces do not affect detection sensitivity.


5. Eddy Current Detection
Eddy current detection mainly uses the eddy current induced by ferromagnetic coils on the workpiece to analyze the internal quality of the workpiece. It can detect surface and near surface defects of various conductive materials. Usually, parameter control is difficult, test results are difficult to interpret, and test objects are needed. It must be a conductive crack and indirectly measure the length of the defect.


6. Magnetic flux leakage detection
The magnetic leakage detection of casing is based on the high permeability of ferromagnetic materials. The quality of casing in use can be measured by measuring the permeability change caused by defects in ferromagnetic materials.


7. Magnetic Memory Detection
Magnetic memory testing is the relationship between the physical properties of magnetic phenomena and the missed distance of metal potential. It has many advantages such as high efficiency, low cost, no need of grinding and so on. It has important and wide application prospects in industry.


Among several testing methods, there are no specific standards for magnetic memory testing of products, which need to be developed. The other six types have their own testing standards and are relatively mature.

The casing is a high-end product produced by steel pipes. There are many types of bushings and there are 15 bushing diameter specifications. The outer diameter range is 114.3-508mm; the steel grade is divided into J55, K55, N80, L-80, P-110, C-90, C-95, T-95, etc.; the casing end buckle type and various requirements, Button type STC, LC, BC, VAM, etc. can be processed. The casing production and installation process involves a large number of tests, mainly in the following aspects:


1, ultrasonic testing
When ultrasonic waves propagate in the material to be tested, changes in the acoustic properties and internal structure of the material have an effect on the propagation of the ultrasonic waves. Detect by the degree and condition of the ultrasonic waves to understand changes in material properties and structure.


2. Radiation detection
Radiographic inspection uses the difference in the amount of radiation transmitted between the normal position and the defect location, resulting in a difference in substrate blackness.


3. Penetration test
Penetration testing utilizes the capillary action of a liquid to penetrate the permeate into open defects on the surface of the solid material and then pull the permeate through the developer onto the surface to reveal the presence of defects.


Penetration testing is applicable to a wide variety of metal and ceramic workpieces. The time from osmotic operation to defect display is relatively short, typically about half an hour, to detect surface fatigue, stress corrosion and weld cracks, and to directly measure crack size.


4, magnetic particle testing
Magnetic particle inspection uses magnetic flux leakage from the defect to absorb magnetic powder and form magnetic marks to provide defects. Surface and subsurface defects can be detected. The nature of the defect is easily identifiable. Paint and plating surfaces do not affect detection sensitivity.


5, eddy current testing
Eddy current testing mainly uses the eddy current induced by the ferromagnetic coil inside the workpiece to analyze the internal quality of the workpiece. Surface and near surface defects of various conductive materials can be detected. Usually parameter control is difficult, test results are difficult to interpret, and test objects are needed. It must be a conductive crack and indirectly measure the length of the defect.


6, magnetic flux leakage detection
Casing magnetic flux leakage detection is based on the high magnetic permeability properties of ferromagnetic materials. The quality of the in-service casing can be detected by measuring the change in permeability caused by defects in the ferromagnetic material.


7, magnetic memory detection
Magnetic memory detection is the relationship between the physical properties of magnetic phenomena and metal dislocation processes. It has the advantages of high efficiency, low cost and no need for grinding. It has an important and broad application prospect in the industry.


Among several detection methods, there is no specific standard for magnetic memory testing of products, which has yet to be developed. The remaining six types have their own test criteria and are relatively mature.

Casing is a high-end product for steel pipe production. There are many types of casing, and there are 15 kinds of casing diameter specifications. External diameter range is 114.3-508mm; steel types are J55, K55, N80, L-80, P-110, C-90, C-95, T-95, etc. 11 kinds; casing end buckle type and various types of requirements, Machinable button STC, LC, BC, VAM equation. Casing production and installation process involves a large number of tests, mainly the following:


1. Ultrasound detection
When the ultrasonic wave propagates in the material to be tested, the changes of the acoustic characteristics and internal structure of the material have an effect on the propagation of the ultrasonic wave. Through the degree and condition of ultrasonic testing, we can understand the change of material properties and structure.


2. Radiographic Detection
Radiographic examination of the difference in the amount of radiation transmitted between the normal and defective parts results in the difference in blackness on the substrate.


3. Penetration test
Penetration testing is to use the capillary effect of liquid to penetrate the penetrant into the open defects on the surface of solid materials, and then to attract the penetrant to the surface through the developer to show the existence of defects.


Permeation test is suitable for all kinds of metal and ceramic workpieces. The time from penetration operation to defect display is relatively short, generally about half an hour. Surface fatigue, stress corrosion and welding cracks can be detected, and crack size can be measured directly.


4. Magnetic Particle Detection
Magnetic particle detection uses flux leakage at defect sites to absorb magnetic particles and form magnetic traces to provide defect indication. It can detect surface and subsurface defects. The nature of defects is easy to identify. Coatings and electroplated surfaces do not affect detection sensitivity.


5. Eddy Current Detection
Eddy current detection mainly uses the eddy current induced by ferromagnetic coils on the workpiece to analyze the internal quality of the workpiece. It can detect surface and near surface defects of various conductive materials. Usually, parameter control is difficult, test results are difficult to interpret, and test objects are needed. It must be a conductive crack and indirectly measure the length of the defect.


6. Magnetic flux leakage detection
The magnetic leakage detection of casing is based on the high permeability of ferromagnetic materials. The quality of casing in use can be measured by measuring the permeability change caused by defects in ferromagnetic materials.


7. Magnetic Memory Detection
Magnetic memory testing is the relationship between the physical properties of magnetic phenomena and the missed distance of metal potential. It has many advantages such as high efficiency, low cost, no need of grinding and so on. It has important and wide application prospects in industry.


Among several testing methods, there are no specific standards for magnetic memory testing of products, which need to be developed. The other six types have their own testing standards and are relatively mature.