Oil casing is a high-end product of steel pipe, casing varieties are more, casing diameter standard scale a total of 15 categories of standards, its outer diameter size is 114.3-508mm; Steel grade is divided into J55, K55, N80, L-80, P-110, C-90, C-95, T-95 and other 11 kinds; There are many types and requirements of casing end buckle, and the machinable buckle types include STC, LC, BC, VAM and so on. The production and installation process of oil casing involves many tests, mainly including the following:

1. Ultrasonic detection

When the ultrasonic wave is conveyed in the test material, the acoustic characteristics of the data and the change of the internal organization have a certain impact on the ultrasonic wave transmission. Through the ultrasonic wave affected the degree and condition to explore, to understand the change in the data performance and structure.

2. X-ray detection

X-ray detection is the use of normal parts and shortcomings of the radiation through the amount of different, and the formation of the black on the negative.

3. Penetration detection

Penetration detection is the use of the liquid capillary effect, the immersion liquid into the solid data surface opening defects, and then through the development agent will enter the immersion liquid into the appearance of defects.

Penetration detection is suitable for all kinds of metal and ceramic workpieces, and the time from penetration operation to defects is relatively short, generally, about half an hour, can detect the appearance of fatigue, stress corrosion, and welding cracks, and can directly measure the size of the crack.

4. Magnetic particle detection

Magnetic powder detection is the use of shortcomings of magnetic leakage and adsorption magnetic powder, forming magnetic marks, to provide shortcomings, can detect the appearance and the appearance of shortcomings, shortcomings nature is easy to identify, paint and electroplating surface does not affect the sensitivity of detection.

5. Eddy's current detection

Eddy current testing is mainly used to analyze the internal quality of the workpiece by the eddy current induced by the ferromagnetic coil. It can detect defects on the surface and near the surface of various conductive data. Usually, the parameter control is difficult, and the detection results are difficult to explain.

6. Magnetic leakage detection

The magnetic leakage detection of oil casing is based on the characteristics of the high permeability of ferromagnetic data. The quality of oil casing in service can be detected by guessing the permeability change caused by defects of ferromagnetic materials by measuring ferromagnetic materials.

Cangzhou Shenlong Pipe is a qualified supplier of PetroChina and BP Oil. Its products are widely used in oil and petrochemical projects all over the world. It is a reliable producer.