Seamless steel tube, also known as SEAMLESS STEEL TUBE, is a kind of rolled steel tube without weld seams. It is made from hot-rolled steel, and sometimes cold-worked to obtain the necessary shape, size and performance. Its specifications are expressed by the outer diameter (in millimeters) multiplied by the wall thickness (in millimeters). There are various types, such as high-pressure seamless tubes for boilers, seamless tubes for boilers, high-pressure seamless tubes for fertilizers, alloy structure steel seamless tubes, etc. It can be produced by methods like hot extrusion, cold pressing, and is widely used in fields like gas and oil pipelines, and automotive drive shafts.
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