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Round welding belt

A round welded flat bar is a steel section with a circular cross section, produced by forming steel sheet and joining the longitudinal seam using resistance or laser welding. This product is typically made from low carbon steel with a carbon content of 0.15 to 0.25 percent and has a tensile strength of 350 to 500 megapascals. The diameter of the round welded flat bar can range from 6 to 60 millimeters, with a typical diameter tolerance of ±0.3 millimeters. Standard lengths are often 6 or 12 meters, and the surface can be supplied as hot rolled or galvanized.

Quality control for round welded flat bars includes tensile tests, bending tests, precise diameter measurement, and weld inspection using non-destructive methods such as ultrasonic testing. The surface hardness is between 110 and 170 Brinell, with the ability for cold bending and precision machining. This type of bar is widely used in the construction of light steel structures, mechanical equipment, and non-pressurized fluid transfer lines. It is manufactured in accordance with standards such as ASTM A108 and DIN EN 10277, ensuring dimensional accuracy and metallurgical quality.

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