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Product Overview
In all kinds of piping systems, stainless steel elbows are indispensable key fittings, mainly used to change the direction of the pipeline. Through a precise bending process, they can realize 90°, 45°, 180°, and other common angles of steering to meet the complex and variable pipeline layout requirements and ensure the smoothness and functionality of the entire piping system.
Performance characteristics
Super corrosion resistance: stainless steel elbow is mainly made of stainless steel containing chromium, nickel, and other alloying elements, these elements form a layer of extremely dense passivation film on its surface. This passivation film is like a strong armor, and can effectively resist the erosion of various chemical substances and the impact of harsh environments. In the chemical industry, strong acid and alkali media transportation, as well as marine engineering in high salinity seawater under the long-term wash, can maintain stable performance, with excellent rust, and corrosion resistance.
High strength and excellent toughness: stainless steel elbow has high strength, can withstand greater pressure and external forces, excellent performance in high-pressure piping systems. At the same time, it has good toughness so that when it is subjected to shock or vibration, it is not easy to rupture, providing a solid guarantee for the safe and stable operation of the pipeline system.
Excellent high-temperature resistance: in a high-temperature environment, stainless steel elbow can maintain stable structure and mechanical properties, and can withstand high-temperature steam, hot oil, and other media of long-term scouring. Therefore, it is widely used in thermal power generation, oil refining, and other industrial pipelines involving high-temperature working conditions.
Hygiene and environmental protection: stainless steel material is safe and non-toxic, and will not cause any pollution to the medium when conveying all kinds of media, which is fully in line with the stringent requirements of the food, pharmaceutical, and other industries on the hygiene standards. In food and beverage processing, pharmaceutical, and other industries the piping system, stainless steel elbow can ensure product quality and safety.
Low fluid resistance: its surface is finely treated and extremely smooth, which reduces the resistance of fluid flow in the pipeline significantly. Not only reduces the energy consumption in the conveying process but also improves the conveying efficiency, which is especially suitable for piping systems with high requirements for flow and pressure.

Specification parameters
Nominal diameter: usually expressed in DN, the unit is millimeter (mm). Common specifications range from DN15 to DN2000, to meet a variety of different needs from small-diameter civil pipelines to large-diameter industrial pipelines.
Outside diameter: corresponds to the nominal diameter, different nominal diameter stainless steel elbow has a specific outside diameter size. For example, DN15 elbow outside diameter is generally 21.3mm, DN20 for 26.9mm, etc., these standard sizes to ensure that the elbow and pipeline connection accuracy and versatility.
Wall Thickness: Wall thickness is expressed in terms of SCH grades (e.g. SCH5s, SCH10s, SCH40, etc.) and specific thickness values (in mm). Different wall thicknesses are suitable for piping systems with different pressure levels and usage scenarios, and users can choose according to actual needs.
Bending radius: Long radius elbows (radius of curvature R = 1.5D, D is the outside diameter of the pipe) and short radius elbows (R = 1D), as well as other special radius specifications. According to the actual pipeline installation space and fluid mechanics requirements, the flexibility to choose the appropriate bending radius, in order to optimize the performance of the piping system.
Angle: The common angles are 45°, 90° and 180°, which are sufficient to meet different piping steering requirements. At the same time, according to the needs of special projects, can also be customized to other angles of the elbow, in order to meet the individual requirements of engineering design.
Pressure Rating: Common pressure ratings are PN0.6, PN1.0, PN1.6, PN2.5, PN4.0, etc., in MPa. Elbows with different pressure ratings are suitable for piping systems with different pressures, and users need to make reasonable matches according to the actual working conditions when choosing.
Execution standards: The execution standards cover national standards (such as GB/T 12459, GB/T 13401), industry standards (such as electric power standards, chemical standards, etc.) and international standards (such as ASME B16.9, DIN, etc.). Strict adherence to these standards for production ensures the quality and versatility of the products, enabling them to be widely used in various engineering projects around the world.

Production Process
Pushing process: Pushing process is a seamless steel pipe is heated to the appropriate temperature, through the pushing machine will push the steel pipe through a specific shape of the mold, so that it gradually bending molding. The elbow produced by this process is smooth inside, stable and reliable quality, suitable for most specifications of stainless steel elbow production, is currently more widely used a production process.
Stamping process: stamping process is the use of presses and molds on the stainless steel plate stamping, made of semi-finished elbow, and then after welding, grinding and a series of subsequent processing procedures, and finally get the finished elbow. The process is suitable for the production of small quantities, special specifications or complex shape of the elbow, to meet the individual needs of some special projects.
Forging process: the forging process is through the heating and forging of stainless steel billet, so that it is formed in the mold. Forging elbow has high strength and density, which is suitable for piping systems with special working conditions such as high pressure and high temperature. However, due to the complexity and high cost of the forging process, its production cost is relatively high.
Installation and Maintenance
Installation precautions: Before installation, the elbow must be thoroughly and carefully inspected in appearance to ensure that there are no cracks, sand holes or any other defects. During the installation process, we must strictly ensure that the centerline of the pipe and elbow coincide, choose the correct connection method according to the actual situation, such as welding, threaded connection, flange connection, etc., and operate in strict accordance with the relevant standards and norms, to ensure that the connection is solid, reliable sealing, to avoid leakage and other problems.
Maintenance points: regular inspection of stainless steel elbow, focusing on whether there is corrosion, deformation, loosening and so on. For elbows with anti-corrosion coating, special attention should be paid to protect the integrity of the coating, once the coating is found to be damaged, it should be repaired in a timely manner. In the process of use, try to avoid excessive external impact and vibration of the elbow to ensure the normal operation of the piping system and extend the service life of the elbow.