The raw material of carbon steel seamless elbow is seamless steel pipe. The main production process is round tube billet through heating and perforating three-roll cross rolling, continuous rolling or extrusion to set (or reduce) the outer diameter of the tube, cooling and straightening/straightening. Direct water pressure test (or flaw detection) mark and enter the warehouse. Schxx is the wall thickness grade, 180e (S) means short radius 180° carbon steel elbow, 180e (L) means long radius 180° elbow; 90E (S) means short radius 90° carbon steel elbow, 90e (L) Refers to a 90° long radius elbow; 45E (L) means a long radius 45° elbow, 45E (S) means a short radius 45° elbow.
The principle of determining the heating temperature of carbon steel elbows is that the austenitizing temperature of the material is higher than this temperature, and the principal compressive stress of the inner wall of the elbow is less than the yield limit of the material at this temperature. The higher the austenitizing temperature and heating temperature, the yield The higher the limit and heating temperature, the higher the advantage of seamless steel pipe.

The advantages of carbon steel seamless elbow

1. The seamless elbow material is all composed of carbon and hydrogen. The seamless elbow material has been inspected by the relevant state departments, and the hygiene is guaranteed.
2. The seamless elbow has good heat resistance; the seamless elbow has strong corrosion resistance, except for a small amount of hydrogenation agent, it will not rust and will not breed bacteria.
3. Good thermal insulation performance, because the thermal conductivity of seamless elbow materials is very low, which is very good compared with thermal insulation materials. This is well known.

4. One more thing must be mentioned. The service life of the stamping elbow is very long. It is said that it has more than 50 years. Due to its rated temperature and pressure, it not only emits radiation and ultraviolet rays, but also makes the product never fade.