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What is Seamless tubes?

Question :What is Seamless tubes?

Answer:

Because pure seamless steel tubes welded microstructure has a better than strength, but more production costs more expensive. Seamless steel ingot is made of perforated or solid through the capillary tube. Then the tube is drawn through a multi-line mill, the mill equipment has been shaped mandrel or end of a long steel rod is inserted to obtain the required diameter of the pipe wall thickness and a limited range. The same pipe diameter can be obtained by size controller, but are subject to change large diameter steel pipe to be reheated by tension Jianjing machining. Boiler and boiler tube-shaped timber, oil and gas industry and automotive driveline components are seamless steel Typical fields of application.