Gold Member Since 2016
Audited Supplier

Yuefeng Valve Manufacturing Co., Ltd.

Trunnion Ball Valve, Forged Ball Valve, Welded Ball Valve manufacturer / supplier in China, offering 150lb 2′′ Pig Launcher Stainless Steel Valve, 2′′ 150lb Forged Pig Ball Valve, Pneumatic Floating Stainless Steel Ball Valve and so on.

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Quality Control

MT (Magnetic particle testing) [Jul 22,2016]
MT (Magnetic particle testing)
Magnetic particle testing is generally used to locate and detect surface sub-surface discontinuities in ferromagnetic materials. The area to be tested is magnetized by direct electric current transmission by a magnetic joke; in case of discontinuity, the magnetic field flowing through the specimen is interrupted and leakage field occurs, iron particles are then applied to the detected area and cluster to form an indication directly over the discontinuity. The indication can be visually detected under proper lighting conditions.