1. Description
MS Seamless Elbows are pipe fittings used to change the direction of piping systems, commonly at 90° or 45° angles. Being seamless, they are made from a single piece of steel without welding, offering higher strength and leak resistance compared to welded elbows.
2. Material
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Mild Steel (MS)
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Common grades: IS 1239, ASTM A234, ASTM A105
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Properties: Good machinability, moderate tensile strength, corrosion-resistant when painted or coated.
3. Types
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Elbow by Angle
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90° Elbow
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45° Elbow
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180° Return Elbow
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Elbow by End Type
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Butt Weld End (BWE)
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Socket Weld End (SWE)
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4. Sizes
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Outer diameter: Typically 15 mm to 600 mm (½” to 24”)
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Wall thickness: According to standard schedule (SCH 10, 20, 40, 80)
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Standard: ASME B16.9, IS 1239 Part 1 & 2
5. Pressure Rating
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Depends on pipe schedule and diameter
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Can withstand low to medium pressure applications (up to ~20 bar in typical MS grades)
6. Applications
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Water supply and distribution
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Steam and oil pipelines
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HVAC systems
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Industrial piping in refineries, plants, and manufacturing units
7. Features
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Seamless construction: No weld seam, less chance of leak
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Durable & Strong
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Corrosion-resistant with painting or galvanizing
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Easy installation in various piping layouts
