The division of 20G elbow and the introduction of

The division of 20G elbow and the introduction of stamping and welding elbow

20g elbow includes seamless elbow, straight seam elbow and punch welded elbow.The original use of seamless elbow and straight seam elbow is straight seam steel pipe and seamless steel pipe.Stamping welding elbow, it uses the same sheet metal as the pipe with the stamping die stamping into a half annular elbow, and then the two half annular elbow is formed by welding.Due to the different welding standards of all kinds of pipelines, semi-finished products are usually delivered according to the group of fixed points, and welded in field construction according to the grade of pipeline weld. Therefore, it is also called two-half welding elbow.20G elbow is a kind of connecting pipe fitting commonly used in plumbing installation. It is used to connect the bend of the pipe and change the direction of the pipe.20G elbow use: connect two pipes of the same or different nominal diameter, is the pipeline for 90°, 45°, 180° machine all kinds of degrees of turning.Bending radius less than or equal to 1.5 times of pipe diameter belongs to elbow, greater than 1.5 times of pipe diameter belongs to elbow.

The hot forming process of welding elbow is a process in which the billet on the die moves forward under the push of the pushing machine, and is heated, expanded and bent in the process.

Hot push bend deformation characteristics is determined according to the law of metal plastic deformation volume before and after the same pipe diameter, the tube billet diameter used less than bend diameter, through the core module and control the deformation of the process, make the inner arc compressed metal flow, the compensation to other parts of the thinned by expanding, resulting in wall thickness of the elbow.

Hot bend forming technology has good appearance, uniform wall thickness and continuous operation, and suitable for the characteristics of mass production, and thus be carbon steel, alloy steel elbow main forming method, and also used in some of the specifications of the bend forming, the forming process of heating have intermediate frequency or high frequency induction heating, heating and reverberatory furnace flame heating,What kind of heating method is used to shape the product requirements and energy conditions.

3009-3101.