Description

The 180˚ Return Long (also known as the 180˚ Long Radius Return Bend) is a type of pipe fitting used to change the flow direction of liquids or gases in a piping system. It has a 180-degree bend shape with a long radius, allowing for smooth flow and minimizing pressure loss in the system.

Applications

• Oil and gas industry: Use oil and gas in pipeline systems to effectively change direction.
• Chemical industry: Applied in chemical plants to operate waste and chemical gases.
• Food and beverage industry: Used in pipe systems of food and beverage factories to ensure smooth flow of materials.
• Power and energy industry: Used in power plant cooling systems, helping to control and adjust the flow direction of cooling liquid.
• Construction and electromechanical industry: Applied in HVAC (Heating, Ventilation and Air Conditioning) systems to redirect air flow.

Standards

180˚ Return Long complies with ASME B16.9, which is an internationally recognized standard for welded pipe fittings, ensuring high quality fittings that meet size and material requirements and process products. The ASME B16.9 standard clearly states:

• Nominal Pipe Size (NPS – Nominal Pipe Size): From 1/2 inch to 48 inches.
• Outside diameter of pipe (OD – Outside diameter).
• Distance from center to center: of the pipe section after bending 180 degrees.
• Radius of curvature (Radius): The radius of curvature of the bending section is usually 1.5 times the outside diameter of the pipe (R=1.5D).
• Material: Stainless steel, carbon steel, alloy steel, and other heat-resistant materials.
• Production process: Regulations on welding, machining and quality inspection methods.

Dimensions and Thickness of 180˚ Return Long according to ASME B16.9

• Carbon steel (Carbon steel): Commonly used in oil, gas, water and steam pipeline systems. This is a popular material due to its low cost and good mechanical properties.
• Stainless Steel (Stainless Steel): Widely used in the chemical, food and pharmaceutical industries thanks to its high corrosion resistance and sustainability.
• Alloy Steel (Alloy Steel): High alloy steel is often used in applications that require high strength and good corrosion resistance, especially in the oil and gas industry.
• Duplex and Super Duplex Stainless Steel: Used in applications requiring high corrosion resistance and harsh environments.
• Nickel alloy steel (Nickel alloy steel): This material has excellent corrosion resistance and is often used in chemical process systems and high temperature environments.
• Ferritic, austenitic and martensitic stainless steels (Ferritic, Austenitic and Martensitic Stainless Steels): Each type has its own properties and can be used depending on the application-specific requirements for corrosion resistance, hardness and durability. heat resistance performance.

Material summary table of 180˚ Return Long according to ASME B16.9 standard