Quality test for seamless steel pipe is a very important step for SMLS steel pipe quality control, and for its detection method is also a very particular method for three testing---Ultrasonic testing, Eddy current testing, Magnetic flux leakage testing. Today, we’ll talk about specific situation on non-destructive testing.

NDT, short for non-destructive testing, is a widely used method for steel pipe inspection. It is a process of testing, evaluating and inspecting the characteristics and quality of the material without damaging steel pipe itself or affecting the later regular work of steel pipe. In other words, after NDT, steel pipe can still put into practical use.

Most common seen NDT are Visual Testing(VT), Ultrasonic Testing(UT), Radio-graphic Testing(RT), Hydrostatic Testing(HT). Tianjin Xinyue Steel Group uses VT, UT, HT for all steel pipes.

In order to verify the mechanical properties of seamless steel pipe to meet the requirement of the standard, test sample of SMLS steel pipe’s mechanical performance should be kept well. Mechanical property test includes tensile strength, yield strength, elongation, impact energy and so on. Process performance test includes flattening test, flaring test, hydrostatic testing, curling trials, cold bend test, perforation test.