vishal@solitaire-overseas.com
Carbon Steel Latrolets are 45° branch outlet fittings used to make an angled outlet from a main pipe to a branch line where there is a restriction in either flow direction or space. They are manufactured using carbon steel grades like ASTM A105, A350 LF2 and A694 and offer excellent welded connection for demanding piping systems. They are designed laterally to help channel the flow efficiently, with no loss of structural support at the branch point. Forged Latrolets are typical of the Carbon Steel Latrolets that are supplied when they are required to conform to the ASME B16.11 specification. Solitaire Overseas offers sourcing for project specific needs including material documentation, dimensional verification, inspection options, and export ready supply for engineered piping needs.
| Specification Parameter | Standard Technical Details |
|---|---|
| Product Name | Carbon Steel Latrolet (45° Lateral Branch Outlet Fitting) |
| Material Grades | Forged Carbon Steel ASTM A105 / ASME SA105 / A105N (Normalized) |
| Branch Angle | 45° Lateral Take-off (reduces fluid friction and turbulence) |
| Manufacturing Standards |
• MSS SP-97: Integrally Reinforced Forged Branch Outlet Fittings • ASME B16.11: Forged Fittings, Socket-Welding and Threaded • ASME B1.20.1 / BS 21: Pipe Threads (NPT, BSP, BSPT) |
| Branch Outlet Size Range | 1/2″ to 4″ NB (Standard); up to 6″+ on special request |
| Run / Header Size Range | 1/2″ to 36″ NB (and larger) |
| Pressure Class / Ratings |
• Socket Weld & Threaded: Class 3000#, Class 6000# • Butt-Weld: Schedule 40 / STD, Schedule 80 / XS, Schedule 160 |
| End Connections |
• Butt Weld (BW) (Beveled per ASME B16.25) • Socket Weld (SW) (per ASME B16.11) • Threaded Ends (THD) (NPT, BSPT, BSP) |
| Surface Finish & Coatings | Galvanized (Hot-Dip / Electro), Black Anti-Rust Oil, Yellow Varnish, Zinc Plating |
| Temperature Rating | Up to 204°C (400°F) for non-corrosive general service |
| Quality & NDT Inspection | Visual Inspection, Dimensional Verification, Hardness Testing, Tensile Testing, Impact Testing, Material Identification |
| Documentation & Reports | Mill Test Certificates (MTC per EN 10204 3.1 / 3.2), Heat Treatment Charts, Raw Material Test Reports (RMTR) |
| Packaging & Logistics |
• Packaging: Wooden Cases, Wooden Pallets, Inner Carton Boxes • Shipping Routes (Air/Sea): Vietnam (~10 Days), Germany (~20 Days), Poland (~45 Days), Finland (~45 Days), Sweden (~45 Days) |
| Primary Systems & Applications | HVAC Systems, Pharmaceutical Processing, Chemical Processing Plants, Power Generation, High-Pressure Steam & Water Lines |
| ELEMENT | COMPOSITION (%) |
|---|---|
| Carbon (C) | 0.35 max |
| Manganese (Mn) | 0.60 to 1.05 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.040 max |
| Silicon (Si) | 0.10 to 0.35 |
| Chromium (Cr) | 0.30 max |
| Nickel (Ni) | 0.40 max |
| Molybdenum (Mo) | 0.12 max |
| Copper (Cu) | 0.40 max |
| Vanadium (V) | 0.08 max |
| PROPERTY | REQUIREMENT |
|---|---|
| Tensile strength, min | 485 MPa (70,000 psi) |
| Yield strength, min | 250 MPa (36,000 psi) |
| Elongation in 2 in, min | 22% |
| Reduction of area, min | 30% |
| Hardness, max | 187 HB |
| Run Pipe Nominal Size | Branch Nominal Size | Cut Hole Diameter (XS) [D1] (mm) | Cut Hole Diameter (Sch 160) [D1] (mm) | Branch OD at End [D2] (mm) |
|---|---|---|---|---|
| DN20 – DN900 | DN15 (1/2 in) | 24 | 19 | 21.3 |
| DN25 – DN900 | DN20 (3/4 in) | 30 | 25 | 26.7 |
| DN32 – DN900 | DN25 (1 in) | 36 | 33 | 33.4 |
| DN40 – DN900 | DN32 (1-1/4 in) | 45 | 38 | 42.2 |
| DN50 – DN900 | DN40 (1-1/2 in) | 51 | 49 | 48.3 |
| DN65 – DN900 | DN50 (2 in) | 65 | 59 | 60.3 |
| DN80 – DN900 | DN65 (2-1/2 in) | 76 | — | 73.0 |
| DN100 – DN900 | DN80 (3 in) | 94 | — | 88.9 |
| DN125 – DN900 | DN100 (4 in) | 121 | — | 114.3 |
| Nominal Outlet Size (NPS) | Weight Range (lbs) |
|---|---|
| 1/2″ | 0.5 to 1.0 |
| 3/4″ | 1.0 to 1.5 |
| 1″ | 1.5 to 2.0 |
| 1-1/2″ | 3.0 to 4.0 |
| 2″ | 4.0 to 5.5 |
| 2-1/2″ | 6.0 to 8.0 |
| 3″ | 8.0 to 12.0 |
| 4″ | 12.0 to 20.0 |
A Carbon Steel Latrolet is a 45° branch outlet fitting used to connect a branch pipe to a main pipe at an angle. It is commonly manufactured from carbon steel grades such as ASTM A105.
A Latrolet is designed at 45° to provide an angled branch connection and redirect flow smoothly where a straight branch outlet is not suitable.
A Latrolet provides a 45° angled branch connection, while a Weldolet provides a 90° branch connection from the main pipe.
A Latrolet creates a 45° lateral branch connection, whereas a Sweepolet has a contoured, swept outlet designed to provide a gradual transition between the main pipe and branch.
Yes, Carbon Steel Latrolets can be used for high-pressure piping when the appropriate material grade, pressure class, dimensions, and applicable standards are selected.
A Latrolet is better when the branch needs smoother flow with less turbulence, pressure loss, and vibration. Its 45° design follows the flow direction more naturally. However, it requires more space along the pipe than a 90° outlet.