The DIN 2605 ST37.2 LR 90° Elbow (often associated with DIN 2605 rather than the 2506 flange standard) is a fundamental carbon steel component for industrial piping. Crafted from ST37.2 (S235JR), it balances affordability with high weldability for non-critical pressure applications. The Long Radius (LR) design, categorized as Bauart 3, provides a $1.5 \times$ diameter bend, ensuring a smooth transition that minimizes pressure loss and internal wear in water, oil, and gas distribution systems.
Technical Attributes: DIN ST37.2 LR 90° Elbow
Material Grade,ST37.2 (DIN 17100) / S235JR (EN 10025)
Fitting Type,90 Degree Long Radius (LR) Elbow
Design Standard,DIN 2605-1 (Reduced pressure factor) / 2605-2 (Full)
Radius Type,Bauart 3 (R≈1.5×D)
End Connection,Butt Welding (BW)
End Preparation,Beveled Ends per DIN 2559
Size Range,DN15 to DN1200
Wall Thickness,Per DIN 2448 (Seamless) or DIN 2458 (Welded)
Manufacturing,Mandrel Bending or Cold Forming
Carbon Content,≤0.17% (Max 0.20% for thick sections)
Tensile Strength,360–510 MPa
Yield Strength,≥235 MPa
Elongation,≥24% to 26%
Surface Treatment,"Black Varnish, Anti-rust Oil, or Galvanized"
Testing Standard,DIN 50049 / EN 10204
Dimensional Specs,DIN 2605 Part 1
Certification,EN 10204 3.1
Service Media,"Water, Low-pressure Steam, Air, Non-corrosive Oil"
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