Carbon steel seamless elbow elbow is used very common kind of material, cheap, easy to use. Material is divided into: low carbon steel, carbon steel, high carbon steel, 20 steel (20g), q235a, q235b etc., is characterized by a relatively high carbon content.
Divided by the standard: GB, non-standard, international standards: DIN, Japanese standard, American Standard, the British standard elbow. Seamless carbon steel elbow seamless steel raw materials is the main production processes for the round tube perforation → → heating → three-roll rolling, rolling or extrusion → detached → sizing (or reducing) → cooling → straightening → hydrostatic test (or testing) → mark → storage. schxx wall thickness grade, 90e (s) for short radius 90 ° steel elbow; 90e (l) represents long radius 90 degrees elbow; 45e (l) represents long radius 45 degrees elbow; 45e (s) for short radius 45 degree elbow; 180e (s) for short radius 180 degree carbon steel elbow; 180e (l) represents 180 degrees long radius bend;
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1. The manufacturing process can be divided into push the system, pressing, forging, casting and so on.
2. In manufacturing standards it can be divided into GB, electricity standard, ship standard, of the standard, water standard, American standard elbow, the German standard, Japanese standard, the Russian standard and so on.
3. According to its radius of curvature of points: it can be divided into long radius elbows and short radius elbow. Long radius elbow refers to its radius of curvature equal to 1.5 times the outer diameter of the pipe, that R = 1.5D; short radius elbow refers to its radius of curvature equal to the pipe diameter, ie R = 1.0D.
Carbon steel seamless elbow in the process should pay attention to the problem
Carbon steel elbow determining principle of the heating temperature is less than the elbow inner wall of the main stress yield limits of the material at this temperature austenitizing temperature or higher, and when to push the system. Material austenitizing temperature, the higher the heating temperature; the higher the yield limit of the material temperature, the heating temperature is higher
What are the advantages of carbon steel seamless elbow
1. Seamless elbow all the material is composed of carbon, hydrogen composed of two elements, will not add any toxic substances, and seamless elbow material is the result of the detection of relevant state departments, so it can be assured of health sex.
2. Seamless elbow weight of just one-tenth of the steel pipe, you can imagine how light it is, but also greatly reduces the cost of transportation, at the time of installation and construction is also very convenient.
3. Heat resistance seamless elbow, but good none, Why? For example, when the working temperature is 70 ° when the softening temperature is 140 °. So it's nothing to worry about heat problems.
4. Seamless elbow corrosion resistance is also very strong, not only will not rust, will not breed bacteria, of course, but a few of the hydrogenating agent addition.
5. Good insulation properties, which should be known to everyone. Because of the low thermal conductivity seamless elbow material, so with respect to insulation performance is very good.
6. Impact strength properties seamless elbow more stronger than other solid-wall pipe, compared with a solid wall, then it is 1.3 times. So it has a strong impact resistance.
7. There is one point I must mention, stamping elbow life long, is said to be more than 50 years, because it is at the rated temperature and pressure, making it not only put radiation, ultraviolet radiation release, but also make the product never fade.
