BS 3799 Socket Weld Pipe Fittings
BS 3799 Socket Weld Pipe Fittings
BS 3799 refers to a British Standard that specifies the requirements for pipe fittings made from cast iron. The standard is focused on cast iron fittings used in supply, waste, and drainage systems in both domestic and industrial applications. The fittings covered by BS 3799 are typically used for connecting and joining cast iron pipes and tubes.
Type of BS 3799 Pipe Fittings
BS 3799 Elbow
BS 3799 Tee
BS 3799 Reducer
BS 3799 Cap
BS3799 Dimensions
| Nominal Bore (DN) | Fitting Type | Outside Diameter (OD) | Wall Thickness (WT) | Radius (R) / Branch Size |
|---|---|---|---|---|
| DN 15 (1/2″) | Elbow (90°) | 21.3 mm | 2.0 mm | 32 mm |
| Tee (Equal) | 21.3 mm | 2.0 mm | DN 15 | |
| Reducer (Concentric) | 60.3 mm | 3.2 mm | – | |
| Cap | 21.3 mm | 2.0 mm | – | |
| DN 20 (3/4″) | Elbow (90°) | 26.9 mm | 2.3 mm | 38 mm |
| Tee (Equal) | 26.9 mm | 2.3 mm | DN 20 | |
| Reducer (Concentric) | 76.1 mm | 3.6 mm | – | |
| Cap | 26.9 mm | 2.3 mm | – | |
| DN 25 (1″) | Elbow (90°) | 33.7 mm | 2.6 mm | 50 mm |
| Tee (Equal) | 33.7 mm | 2.6 mm | DN 25 | |
| Reducer (Concentric) | 88.9 mm | 3.6 mm | – | |
| Cap | 33.7 mm | 2.6 mm | – | |
| DN 32 (1 1/4″) | Elbow (90°) | 42.4 mm | 2.6 mm | 63 mm |
| Tee (Equal) | 42.4 mm | 2.6 mm | DN 32 | |
| Reducer (Concentric) | 114.3 mm | 4.0 mm | – | |
| Cap | 42.4 mm | 2.6 mm | – | |
| DN 40 (1 1/2″) | Elbow (90°) | 48.3 mm | 2.9 mm | 75 mm |
| Tee (Equal) | 48.3 mm | 2.9 mm | DN 40 | |
| Reducer (Concentric) | 168.3 mm | 4.5 mm | – | |
| Cap | 48.3 mm | 2.9 mm | – | |
| DN 50 (2″) | Elbow (90°) | 60.3 mm | 3.2 mm | 100 mm |
| Tee (Equal) | 60.3 mm | 3.2 mm | DN 50 | |
| Reducer (Concentric) | 168.3 mm | 4.5 mm | – | |
| Cap | 60.3 mm | 3.2 mm | – | |
| DN 65 (2 1/2″) | Elbow (90°) | 76.1 mm | 3.6 mm | 125 mm |
| Tee (Equal) | 76.1 mm | 3.6 mm | DN 65 | |
| Reducer (Concentric) | 168.3 mm | 4.5 mm | – | |
| Cap | 76.1 mm | 3.6 mm | – | |
| DN 80 (3″) | Elbow (90°) | 88.9 mm | 3.6 mm | 150 mm |
| Tee (Equal) | 88.9 mm | 3.6 mm | DN 80 | |
| Reducer (Concentric) | 168.3 mm | 4.5 mm | – | |
| Cap | 88.9 mm | 3.6 mm | – | |
| DN 100 (4″) | Elbow (90°) | 114.3 mm | 4.0 mm | 200 mm |
| Tee (Equal) | 114.3 mm | 4.0 mm | DN 100 | |
| Reducer (Concentric) | 168.3 mm | 4.5 mm | – | |
| Cap | 114.3 mm | 4.0 mm | – | |
| DN 150 (6″) | Elbow (90°) | 168.3 mm | 4.5 mm | 300 mm |
| Tee (Equal) | 168.3 mm | 4.5 mm | DN 150 | |
| Reducer (Concentric) | 168.3 mm | 4.5 mm | – | |
| Cap | 168.3 mm | 4.5 mm | – |
Material
- Stainless Steel: Ideal for corrosive environments, offering excellent strength and durability.
- Carbon Steel: Provides robustness and is commonly used for general industrial applications.
- Alloy Steel: Offers enhanced resistance to temperature extremes and pressure.
- Copper: Commonly used for plumbing and heating systems due to its resistance to corrosion and ease of use.
Tolerance
- Dimensional Tolerances: Provides the limits of size variation that are acceptable for parts in manufacturing.
- Geometric Tolerances: Includes allowances for form, orientation, location, and run-out.
- Angular Tolerances: Specifies allowable deviations for angles, typically in degrees or minutes.
- Datum and Reference Systems: Guidelines for defining points, lines, and planes that serve as reference locations for tolerances.
Applications
- Oil and Gas
- Chemical Processing
- Water Treatment
- Construction
- Power Generation