MS Buttweld 'B' Class

45° Elbow

Mild Steel · ASME B16.9 · 16 sizes

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← All B Class (Medium)

MS Buttweld 'B' Class

Buttweld 45° Elbow

7307MSW45B001

Material: Mild Steel (IS 1239 Part 2 / IS 2062 Gr. A)
Type: Welded (ERW)
Angle: 45°
Radius: 15.88 mm (1.25D)
Schedule: Class B (Medium)
End Connection: Beveled End
Dimension Standard: ASME B16.9
Temperature: -10°C to 300°C
Pressure Rating: ~42 bar (IS 1239 Class B, Medium)
HSN Code: 73079300
GST: 18%

Schematic: letters match the table columns

Illustration

5 columns · scroll sideways

SizeNPS	OD (D)mm	Wall (t)mm	Center-to-End (B)mm	Radiusmm
1/2" NB	21.3	2.0	6.6	15.88 (1.25D)
3/4" NB	26.7	2.0	9.9	23.81 (1.25D)
1" NB	33.4	2.5	13.2	31.75 (1.25D)
1-1/4" NB	42.2	3.0	16.4	39.69 (1.25D)
1-1/2" NB	48.3	3.0	19.7	47.63 (1.25D)
2" NB	60.3	3.0	26.3	63.50 (1.25D)
2-1/2" NB	73.0	3.5	32.9	79.38 (1.25D)
3" NB	88.9	3.5	39.5	95.25 (1.25D)
4" NB	114.3	3.5	52.6	127.00 (1.25D)
5" NB	141.3	4.0	65.8	158.75 (1.25D)
6" NB	168.3	4.0	79.0	190.50 (1.25D)
8" NB	219.1	4.5	105.2	254.00 (1.25D)
10" NB	273.0	4.5	131.5	317.50 (1.25D)
12" NB	323.8	4.5	157.8	381.00 (1.25D)
14" NB	355.6	4.5	184.1	444.50 (1.25D)
16" NB	406.4	4.5	210.4	508.00 (1.25D)

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

Certification: All relevant test certificates or document will be provided.
Coating: Anticorrosion Paint Charges Included and Hot Dip Galvanizing Coating (GI), Epoxy Coating Charged Extra.
Taxes & Duties: GST and any other statutory levies shall be charged extra at applicable rates.

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

About the 45° elbow

A 45° elbow provides a gentle direction change with lower pressure drop than a 90° elbow. Used wherever a gradual turn is possible, often combined with a 90° elbow to achieve offset pipe runs without a full right-angle turn.

45° direction change: gentler than 90° elbow
Lower pressure drop coefficient (K ≈ 0.07–0.14) vs 90° elbow
Identical bore and end connection to matching 90° elbow
Available in 1.25D (IS) and 1.5D LR (ASME) radius

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

More in B Class (Medium)

MS Buttweld 'B' Class

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