IS 1239-2 Table 4 Nominal bore 125 bends 90° and springs (mm) — IS 1239-2
IS 1239-2 Table 4 Nominal bore 125 bends 90° and springs (mm) to IS 1239-2: bend 90° a approx centre to face 540 mm, b 632 mm, r approx radius 460 mm, spring 112.5° c centre to face 476 mm, spring 135° d 457 mm.
Dimensions of IS 1239-2 Table 4 Nominal bore 125 bends 90° and springs (mm)
| Symbol | Dimension | Value |
|---|---|---|
| · | Bend 90° A approx centre to face | 540 mm (21.260 in) |
| · | B | 632 mm (24.882 in) |
| · | R approx radius | 460 mm (18.110 in) |
| · | Spring 112.5° C centre to face | 476 mm (18.740 in) |
| · | Spring 135° D | 457 mm (17.992 in) |
| · | Spring 157.5° E | 444 mm (17.480 in) |
SKU TSH-BW-IS-1239-2-BENDS-90-AND-SPRINGS-MM-125 · Standard IS 1239-2 · teshi-web
Purchase description
IS 1239-2 TABLE 4, Nominal bore 125, BENDS 90° AND SPRINGS (MM), ASTM A234 WPB, IS 1239-2
Available materials: ASTM A234 WPB, ASTM A420 WPL6, ASTM A403 WP304/304L, ASTM A403 WP316/316L, ASTM A234 WP11, ASTM A234 WP22, ASTM A234 WP91, ASTM A815 UNS S31803.
Notes
- All dimensions are in millimetres; nominal sizes are nominal bore (mm).
- Threads are to IS 554 (equivalent to BSP / ISO 7-1).
- Values are nominal dimensions from the standard; a dash (—) means the value is not listed. Verify against the current edition before design, purchase or fabrication.
Other sizes — IS 1239-2 Table 4, bends 90° and springs (mm)
Nominal bore 6Nominal bore 8Nominal bore 10Nominal bore 15Nominal bore 20Nominal bore 25Nominal bore 32Nominal bore 40Nominal bore 50Nominal bore 65Nominal bore 80Nominal bore 100Nominal bore 150
Frequently asked questions
What is the difference between a long radius and short radius elbow?
A long radius (LR) elbow has a centre-line radius of 1.5 × NPS and is the default choice. A short radius (SR) elbow has a radius of 1.0 × NPS. SR elbows save space but add pressure drop and are not suitable for pigging.
What is the centre-to-end dimension of a 90° LR elbow?
For ASME B16.9 90° LR elbows the centre-to-end dimension A is 1.5 × NPS in inches. For example, a 6" elbow is 229 mm (9 in) and a 4" elbow is 152 mm (6 in).
What is the difference between a concentric and an eccentric reducer?
A concentric reducer keeps both ends on the same centre line. An eccentric reducer has one flat side. Eccentric reducers go on pump suctions with the flat side on top, so air pockets cannot form.
What is a 3D or 5D bend?
A bend whose centre-line radius is 3 or 5 times the nominal pipe size. They are usually made by induction bending and supplied with tangent lengths. 5D bends allow pigging in pipelines.