Long Radius 180 Degree Bend Pipe Fitting

  • 180 deg long radius return bends

YANHAO is a professional bends manufacturer, supplier and exporter. We produce long radius 180 degree bends, these bends are made of carbon steel, stainless steel or alloy steel materials. Manufacture bends that meet customer requirements through hot pushing, pressing and socket welding. And these elbows meet ASME B16.9 standards. They can be connected to other pipes via weld neck flanges, threaded flanges and socket weld flanges.

  • Types: Long Radius Bends
  • Degree: 180°
  • Sizes: 1″ to 48″ NPS
  • Material: Carbon Steel & Alloy Steel & Stainless Steel
  • Production: Hot Pushing, Stamping, Socket Welding
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45-Degree

90-Degree

180-Degree

Custom Size

180-Degree Long Radius Bend dimensions

NOTE : All dimensions are in millimeters.

Nominal Pipe SizeOutside Diameter at BevelCenter to Center, OBack To Face, K
1/221.37648
3/426.77651
133.47656
1 1/442.29570
1 1/248.311483
260.3152106
2 1/273190132
388.9229159
3 1/2101.6267184
4114.3305210
5141.3381262
6168.3457313
8219.1610414
10273762518
12323.8914619
14355.61067711
16406.41219813
184571372914
2050815241016
2255916761118
2461018291219
  • 107

YANHAO typically uses the following elbow material grades:

  • Carbon Steel: ASTM A105, 20#, Q235, 16Mn, Q345b, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70.
  • Stainless Steel: ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8.
  • Alloy Steel: ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8/III.

These materials possess excellent abrasion resistance, corrosion resistance, and heat resistance, and can be widely used in the power, metallurgy, mining, and chemical industries for the transportation of sand, stones, coal powder, slag, aluminum liquid, and corrosive media. They are also suitable for high-temperature steam transportation pipelines, water-gas pipelines, and other transportation pipeline systems.

Long Radius Elbow

The curvature radius of the elbow can be divided into long radius elbow and short radius elbow. The radius of curvature of the long-radius elbow is equal to 1.5 times the outer diameter of the pipe, that is, R=1.5D; if it is greater than 1.5 times, it is an elbow.Long radius elbow is a commonly used elbow, usually used in pipelines with high pressure or high flow rate. If the resistance requirements of the transportation pipeline are strict, a larger radius elbow needs to be used.

According to different manufacturing methods, it can be divided into push elbow, extrusion elbow and welded miter elbow. Push elbows and squeeze elbows are commonly used on small and medium-sized pipes. Welded miter elbows are used on large-size pipelines. When the miter angle of the miter elbow is greater than 450, it is not suitable to be used on pipelines with highly toxic or flammable media, or withstand mechanical vibrations and alternating loads caused by temperature changes. on the pipeline

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Long Radius 180-Degree Bend Application

FAQ

  • By angle: Common ones are 45, 90, 180 and others
  • By manufacturing method: push, stamping, butt welding.
  • By material: stainless steel, carbon steel, alloy steel, each has a subdivided steel grade, I told you last time, you can check the previous chat
  • By connection method: welded elbow, threaded elbow, clamp elbow

The 3D elbow has a larger bending radius than the long radius elbow, and its bending radius is three times the nominal diameter of the connected pipe (R=3D). This design is often called a large radius elbow. It has similar functions to long radius elbows and short radius elbows, but due to its larger bending radius, the 3D elbow requires more space when installed.

The wall thickness of the elbow is generally selected according to the wall thickness of the pipe. The wall thickness is generally divided into: Sch5S, Sch10S, Sch40S, Sch80S, Sch10, Sch20, Sch30, STD, Sch40, Sch60, XS, Sch80, Sch100, Sch120, Sch140, Sch160, XXS.

If it is customized, it can be made according to the customer’s drawings, or the customer can provide other pipe thicknesses in the working environment, or fluid properties, pressure and other related data for our engineers to select for them.

The main treatments include sandblasting, anti-corrosion paint, polishing, galvanizing, etc. These treatments are mainly for corrosion prevention and aesthetics.

The difference between a long radius elbow and a short radius elbow is the length of their circle radius. The long radius elbow has a larger curvature and occupies a larger area, which means that the internal fluid has enough space to bend during transportation. It is relatively stable and smooth, but it is not suitable for some places with limited space. Short radius elbows must be used, which occupy a smaller area and are more suitable for use in narrow spaces.

Yes, flanges and elbows can both be connected to pipes. The commonly used connection method does not require this operation, but it can be used in places that need frequent maintenance.
Because the flange is easy to disassemble, after the elbow is welded to the flange, the flange is connected to the pipe, so that the bend can be disassembled, which is convenient for later inspection and maintenance.

Thread refers to a connection method of flange elbows. Thread means that the threads inside the flange and elbow just match the threads on the pipe, which is like the relationship between screws and nuts. They can be connected by tightening them directly. Welding is usually used for connection, but welding cannot be used in some environments, so threads are needed.