Cold Drawn Steel Pipe, Cold Drawn Seamless Steel Pipe

Diverse categories based on different production methodsHot-rolled tubeCold Rolled TubesCold Drawn TubeExtruded tubes, cold drawn seamless steel tubes, etc.Hot-rolled Seamless Steel PipeThe difference is that cold drawn seamless steel tubes have better precision than hot rolled seamless steel tubes. Generally, cold drawn seamless steel tubes...DegreeAt about 20 gauge.Hot-rolled Seamless PipeThe precision is around 100 microns, making cold drawn seamless steel tubes essential for the machinery processing and parts manufacturing industries.

1.1 Hot-rolled seamless pipes are generally produced on automatic pipe rolling mills. Solid billets are inspected and surface defects are removed, cut to the required length, centered on the billet piercing end face, then sent to the heating furnace for heating, and pierced on the piercing machine. While piercing, the billet continuously rotates and advances, gradually forming a hollow cavity inside under the action of the rolling mill and mandrel, known as a rough pipe. It is then sent to the automatic pipe rolling mill for further rolling. The wall thickness is evened out by a sizing machine, and the diameter (reduction in diameter) is determined by a sizing (reduction in diameter) machine to meet the specifications. Continuous rolling mill units are used for production.Hot-rolled Seamless Steel PipeIt's a comparative method.