Fittings Technical Catalogue
Comprehensive fittings solutions and technical specifications for industrial piping systems.
Fitting Types
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90° Elbow
Standard solution for 90-degree direction change in piping systems.
Available Types:
Standard Dimensions - ANSI B16.9
| Nominal Size | Outside Ø (mm) | Thickness (mm) | Center to End (mm) | Radius (mm) |
|---|---|---|---|---|
| 1/2" | 21.3 | 2.77 | 38 | 76 |
| 1" | 33.4 | 3.38 | 51 | 102 |
| 2" | 60.3 | 3.91 | 76 | 152 |
| 4" | 114.3 | 6.02 | 152 | 305 |
| 8" | 219.1 | 8.18 | 305 | 610 |
| 12" | 323.9 | 10.31 | 457 | 914 |
Key Features
- Low flow loss
- Smooth inner surface
- Easy installation
- High pressure resistance
- Long radius design
- Standard dimensions
Applications
- Pipe direction changes
- Mechanical piping
- Process lines
- HVAC systems
- Water pipelines
- Industrial installations
Technical Notes
- Available in Long Radius (LR) and Short Radius (SR) types.
- Use long radius elbows to minimize flow loss.
- Proper beveling is required before welding.
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Detailed Technical Information and Quotation
Contact our expert team for detailed technical documents, application recommendations, and custom size quotations regarding this product type.
Get Technical SupportWhat are pipe fittings?
Pipe fittings are the components that change direction, branch, reduce or terminate a pipeline: elbows (90°/45°), tees, reducers, caps and crosses. Butt-weld fittings are produced to ASTM A234 / EN 10253 material specs and ASME B16.9 dimensions, in sizes from 1/2" to 48".
Elbow types and connection methods
The most used fitting is the elbow: made in 90° and 45° angles, long radius (LR, radius = 1.5 × diameter) and short radius (SR, radius = 1 × diameter). LR elbows are standard because they give lower pressure drop and turbulence; SR elbows serve tight layouts. By connection method there are three families: butt-weld (ASME B16.9 — larger bores), socket-weld and threaded (ASME B16.11 — typically below 2"). The material range covers carbon steel (A234 WPB), alloy (WP11/WP22/WP91), stainless (A403) and low-temperature (A420) grades. All products ship with 3.1 certificates and full traceability.
Frequently Asked Questions
What does ASTM A234 WPB mean?+
A234 is the material spec for wrought carbon and alloy steel fittings for moderate and elevated temperature service; WPB is the most common carbon steel grade (W=weldable, P=pressure, B=grade B).
Long radius (LR) vs short radius (SR) elbow?+
An LR elbow has a bend radius of 1.5 × diameter, an SR elbow 1 × diameter. LR gives less pressure drop and erosion; SR is chosen only where space is tight.
Where are butt-weld, socket-weld and threaded fittings used?+
Butt-weld (B16.9) on larger-bore main lines; socket-weld and threaded (B16.11) typically below 2", on small-bore, instrument and utility lines.
How do EN 10253 and ASME B16.9 relate?+
Both are butt-weld fitting standards: B16.9 is the American system, EN 10253 the European one. The project specification determines which system sets dimensions and materials.
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