Socket Weld Elbow 90°
Forged 90° elbow with socket weld ends — changes flow direction in high-pressure small-bore piping.
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4" MS 90° LR Elbow
Mild steel butt-weld 90° long radius elbow — smooth flow change for industrial pipeline direction turns.
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MS90Pipe Fittings
Overview
4" MS 90° LR Elbow is a mild steel butt-weld pipe fitting used to change pipeline direction by 90° with a long-radius (1.5D) bend for lower pressure drop and smoother flow than a short-radius elbow. Each end is beveled for butt welding to matching pipe, forming a permanent, high-integrity joint. The black-coated mild steel construction is widely used in oil and gas transmission, water distribution, steam lines, structural piping and general industrial plant work where reliable welded connections and economical carbon steel fittings are required.
Size Range
½" – 48" (NPS); 4" standard
Pressure Class
Per pipe schedule (Sch 40, Sch 80, XS, XXS)
Key Features
- 90° change of direction with long-radius (1.5D) bend profile
- Mild steel construction with protective black coating
- Beveled butt-weld ends per ASME B16.25
- Smooth internal bore — lower turbulence than short-radius bends
- Suitable for Sch 40, Sch 80 and heavier wall schedules
- Available from ½" through large bore including 4" and above
- 45° LR elbows and short-radius (SR) bends on request
Benefits
- Long-radius bend reduces erosion and pressure loss at the turn
- Economical mild steel for general industrial service
- Permanent welded joint — no threaded or flanged coupling at the bend
- Full size range, schedules and coatings per project specification
Specifications
| Standards | ASME B16.9, MSS SP-75, GB/T 12459 |
| Type | 90° Long Radius (LR) — center-to-face 1.5 × NPS |
| Nominal Diameter | NPS ½" – 48" (DN15 – DN1200); 4" (DN100) shown |
| Connection | Butt weld — beveled ends per ASME B16.25 |
| Radius | Long radius (LR) 1.5D; short radius (SR) 1.0D on request |
| Finish | Black painted / oiled anti-corrosion coating (bare or galvanized on request) |
Applications
Oil and gas transmission and process pipingWater supply, fire protection and utility networksSteam, condensate and HVAC piping systemsPower plant and refinery pipeline direction changesStructural and fabrication projects requiring welded bends
Product Enquiry
Standards
- • ASME B16.9
- • ASME B16.25
- • MSS SP-75
- • GB/T 12459
Materials
- • Mild Steel / Carbon Steel: ASTM A234 WPB, A420 WPL6, 20#, Q235
- • Stainless Steel: 304, 304L, 316, 316L (on request)
- • Alloy Steel: A234 WP11, WP22 (on request)
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