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Return, also called 180°Elbow, helps change direction at 180 degrees since it usually results in low pressure. Its application is limited to minimal deposition and low turbulence systems.
The 180° Return elbow is a type of pipe fitting that can change the flow direction of liquid or gas in the pipe system. Purpose: Connect two pipes with the same or different nominal diameters to make a 180° turn of the pipeline
| Size | O.D | O | K | Size | O.D | O | K |
| 1/2" | 21.3 | 76 | 48 | 6" | 168.3 | 457 | 313 |
| 3/4" | 26.7 | 76 | 51 | 8" | 219.1 | 610 | 414 |
| 1" | 33.4 | 76 | 56 | 10" | 273 | 762 | 518 |
| 1 1/4" | 42.2 | 95 | 70 | 12" | 323.8 | 914 | 619 |
| 1 1/2" | 48.3 | 114 | 83 | 14" | 355.6 | 1067 | 711 |
| 2" | 60.3 | 152 | 106 | 16" | 406.4 | 1219 | 813 |
| 2 1/2" | 73 | 190 | 132 | 18" | 457 | 1372 | 914 |
| 3" | 88.9 | 229 | 159 | 20" | 508 | 1524 | 1016 |
| 3 1/2" | 101.6 | 267 | 184 | 22" | 559 | 1676 | 1118 |
| 4" | 114.3 | 305 | 210 | 24" | 610 | 1829 | 1219 |
| 5" | 141.3 | 381 | 262 | ||||
Both return black paint seamless/weld and 45 ° elbow manufacture standard can be ASME B16.9,ASME B16.28,MSS SP-43,MSS SP-75 JIS B2311,DIN2605/2615/2616/2617,GOST 17375/17376/17378/17379,ISO
Both return black paint seamless/weld and 45 ° elbow wall thickness can be SCH10/10S,SCH20/20S,STD,SCH40/40S,XS,SCH80,XXS ETC.(for ANSI),SGP(for JIS)
Size: 1/2"-48"(DN15-DN1200), or even bigger
Finishing: Black, Vanish, Oiled, Galvanized.
Connection type: Butt Welding.
Return and 45°elbow fittings are directly butt-welded to the pipe end and connected to the pipe system.
Return, also called 180°Elbow, helps change direction at 180 degrees since it usually results in low pressure. Its application is limited to minimal deposition and low turbulence systems.
Schedule, often shortened as such, is a North American standard that refers to the wall thickness of a pipe or pipe fitting. Higher schedules mean thicker walls that can resist higher pressures.
Pipe standards define these wall thicknesses: SCH 5, 5S, 10, 10S, 20, 30, 40, 40S, 60, 80, 80S, 100, 120, 140, 160, STD, XS and XXS. (S following a number is for stainless steel. Sizes without an S are for carbon steel.)
Higher schedules are heavier, require more material, and are therefore more costly to make and install.
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