In the process of manufacturing and using welded pipe, nondestructive testing to ensure weld quality is particularly important. The common nondestructive testing methods for welded pipes are: ultrasonic testing, off-line magnetic flux leakage testing and eddy current testing; Ultrasonic flaw detec

Penetrant testing (abbreviated as PT) is a nondestructive testing method for inspecting surface opening defects based on the principle of capillary action. This method is one of the five conventional nondestructive testing methods and is a comprehensive science and technology.

Companies in the upstream oil & gas industry have been looking for ways to increase production capacity, improve process efficiency and minimize machine downtime. At present, many large oilfield service companies are using chemical injection system to separate water / gas / oil, reduce corrosion and