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Inspection of Welded Elbows

Summary Description： Visual inspection, conducted primarily by the naked eye and with a magnifying glass, can reveal surface defects in welded elbow welds, such as undercut, weld buildup, surface cracks, porosity, slag inclusions, and burn-through.

Inspection of welded elbows primarily includes visual examination and nondestructive testing.

Visual inspection is primarily conducted by naked-eye observation and magnification, enabling the identification of surface defects in welded elbow welds, such as undercut, weld buildup, surface cracks, porosity, slag inclusion, and burn-through. In addition, the weld’s external dimensions can be measured using a weld‑gap gauge or a template.

Nondestructive testing is primarily used to detect defects in welds, such as inclusions, porosity, and cracks. The most commonly employed NDT methods include X-ray inspection, ultrasonic testing, and magnetic particle inspection. X-ray inspection can determine the presence of defects, as well as their quantity and type, and assess whether a weld meets the product’s technical specifications. Ultrasonic testing involves transmitting ultrasonic waves through the metal via a probe; however, it relies on operator experience for interpretation and should not be used as the sole basis for acceptance. Magnetic particle inspection is suitable for detecting internal defects and small surface cracks in welded joints.

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Hengtong Pipe Fittings Group

Hebei Hengtong Pipe Fitting Group manufactures steel fittings with integrated R&D, production, sales and services. With independent IP rights, we focus on two core product lines: concrete pump components and premium industrial pipe fittings.