15230713671
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产品类型：carbon steel elbow
产品型号：168
产品厚度：sch40
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National standard carbon steel elbow
Carbon steel elbow is a metal pipe fitting to change the direction of a carbon steel pipe.The connection mode is wire buckle and welding.According to the Angle, there are 45° and 90°180° three commonly used, and according to the engineering needs, there are also 60° and other abnormal Angle elbows.Elbow materials include cast iron, stainless steel, alloy steel, malleable iron, carbon steel, nonferrous metal and plastic, etc.There are direct welding (commonly used) flange connection, hot melt connection, electric fusion connection, threaded connection and socket connection, etc.According to the production process can be divided into: welding elbow, stamping elbow, push elbow, casting elbow, etc.Other names: 90 degree bend, right Angle bend, love and love bend, etc.
The manufacturing standard of carbon steel elbow is divided into: national standard, American standard, Japanese standard, Russian standard, German standard.
The basic production process of carbon steel elbow is: first welding with a polygon section polygon ring shell or polygon closed at both ends of the shell, cleaning the internal pressure of the medium, the internal cross-section of the pressure polygon gradually under the pressure of the wheel, and eventually become a circular shell.Circular shell if necessary, can be reduced to 4 or 6 90 degree elbow or 60 degree elbow or other specifications of the bending process in any ratio greater than 1.5 times the diameter of the inner diameter and elbow specification large elbow is an ideal method of manufacturing large carbon steel elbow:Not suitable for pipe as raw material, save pipe equipment and work costs, in any relatively thin carbon steel elbow can be obtained larger diameter and wall thickness.The blank is flat or developable surface, so it is simple to cut, easy to ensure precision, easy to assemble and welding.
Because of the above two reasons, the manufacturing cycle can be shortened and the production cost can be greatly reduced.Because it does not need any special equipment, it is specially used in the field processing of large carbon bending pipe.Carbon steel elbow is mainly used in petroleum, chemical, construction, heating, boiler pipeline industry.
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