SS 316 Buttweld

180° Return Bend

Stainless Steel · ASME B16.9 · 13 sizes

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SS 316 Buttweld

Buttweld 180° Return Bend

7307SS316180001

Material: Stainless Steel 316/316L (ASTM A403 WP316)
Type: Seamless
Angle: 180°
Radius (R): 38.1 mm (LR)
Overall width (O + D): 97.5 mm
Schedule: SCH 40S
End Connection: Beveled End per ASME B16.25
Dimension Standard: ASME B16.9
Temperature: -196 deg C to 870 deg C
Pressure Rating: Per ASME B31.3 schedule rating
HSN Code: 73072990
GST: 18%

Schematic: letters match the table columns

Illustration

6 columns · scroll sideways

SizeNPS	OD (D)mm	Wall (t)mm	Center-to-End (A)mm	Overall width (O + D)mm	Radius (R)mm
1/2" NB	21.3	2.77	38.1	97.5	38.1 (LR)
3/4" NB	26.7	2.87	38.1	102.9	38.1 (LR)
1" NB	33.4	3.38	38.1	109.6	38.1 (1.5D LR)
1-1/4" NB	42.2	3.56	47.8	137.8	47.8 (1.5D LR)
1-1/2" NB	48.3	3.68	57.2	162.7	57.2 (1.5D LR)
2" NB	60.3	3.91	76.2	212.7	76.2 (1.5D LR)
2-1/2" NB	73.0	5.16	95.3	263.6	95.3 (1.5D LR)
3" NB	88.9	5.49	114.3	317.5	114.3 (1.5D LR)
4" NB	114.3	6.02	152.4	419.1	152.4 (1.5D LR)
5" NB	141.3	6.55	190.5	522.3	190.5 (1.5D LR)
6" NB	168.3	7.11	228.6	625.5	228.6 (1.5D LR)
8" NB	219.1	8.18	304.8	828.7	304.8 (1.5D LR)
10" NB	273.0	9.27	381.0	1035.0	381.0 (1.5D LR)

Pricing: prices for this product are not listed. Request a quotation.

Certification: MTR, PMI, dye penetrant (PT) test certificates available.
Coating: 2B mill finish. Mirror / brushed / electropolished on request.
Taxes & Duties: GST and all applicable levies charged extra at prevailing rates.

All dimensions in millimetres. Subject to change without notice. Spotted a mistake or wrong data? Please contact us.

About the 180° return bend

The 180° return bend (U-bend) reverses the flow direction in a single fitting. Used in heat exchangers, coil arrangements, hairpin heat exchangers, and pipe loops where the pipe must double back on itself.

Full 180° flow reversal in a single factory-made fitting
Available in Long Radius (1.5D) and Short Radius (1.0D) per ASME B16.9
1.25D radius for mild steel
Two centre-to-end dimensions (A and B) defining the overall envelope
Matched bore to pipe: no step or projection at weld

Applicable Standards

Standards governing design, dimensions, and testing

ASME B16.9

Factory-Made Wrought Buttwelding Fittings

Covers the full range of industrial butt weld fittings (elbows, tees, reducers, caps, returns) in carbon steel, alloy steel, and stainless steel from ½" to 48" NB.

Applies to NPS ½" through 48" (DN 15 through DN 1200)
Schedule wall: STD / XS / XXS plus full SCH range
Radius: Long Radius (LR) 1.5D and Short Radius (SR) 1.0D elbows
Dimensional tables are the only source of 'legal' wall thickness
No pressure-temperature rating: use ASME B31.3 / B31.1 with pipe schedule
End prep: per ASME B16.25 bevel

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SS 316 Buttweld

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