Butt Weld 90° Elbow
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A Butt Weld 90° Elbow is a standard pipe fitting used to change the direction of flow in a piping system by 90 degrees while connecting two sections of pipe via direct butt welding. Core Definition & Connection Butt Weld (BW): The fitting’s ends are precision-beveled to match the pipe’s wall thickness, enabling full penetration welding directly to the pipe ends.This creates a permanent, leak-proof, high-strength joint that acts as an integral part of the pipeline.Primarily used for same-size pipes (equal-diameter elbows); reducing (concentric/eccentric) versions are also available for connecting different pipe sizes. Key Types (Radius) Long Radius (LR): Centerline radius = 1.5 × Nominal Pipe Diameter (1.5D).Smoother flow, lower pressure drop, less turbulence.Most common for general industrial use.Short Radius (SR): Centerline radius = 1.0 × Nominal Pipe Diameter (1.0D).Compact, for tight spaces.Higher pressure loss. Common Materials Carbon Steel: ASTM A234 WPB (most widely used).Stainless Steel: ASTM A403 WP304, WP316L (corrosive environments).Alloy Steel: For high-temperature/pressure (e.g., power plants). Standards & Dimensions Standards: ASME B16.9, MSS SP-43, API, JIS, EN.Sizes: 1/2" to 80" (DN15 to DN2000).Wall Thickness: SCH 40 (STD), SCH 80 (XS), SCH 160, XXS. Typical Applications Oil & gas, petrochemical, refineriesPower generation (thermal, nuclear)Chemical processingBoiler and utility pipingShipbuilding, offshore platformsHigh-pressure/high-temperature pipelines Advantages Strong, rigid, leak-proof (no gaskets/threads).Full bore flow (minimal obstruction).High integrity for pressure/vacuum/corrosion.Smooth interior (reduces friction & buildup).Long service life under severe conditions. the butt weld 90° elbow is the primary, reliable fitting for sharp directional changes in heavy-duty piping systems worldwide.
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Main products: WN, SO, PL, BL flanges, elbows, tees, reducers, caps. Materials: carbon steel, stainless steel, alloy steel. Standards: ASME, ANSI, EN, JIS, DIN. Export to global pipeline projects. Contact Us