American Butt Weld Straight Tee
- Certificate: IOS
- Standard: ASME B16.9, API 5L, etc.
- Material: carbon steel, low-temperature steel and nickel-based alloy.
- Temperature range: -253°C to 1095°C
- Straight Tee: branch and main diameter are the same (e.g. NPS 8 x 8 x 8)
- American Butt Weld Reducing Tee
We have been manufacturing and selling pipe fittings for more than 20 years, our strength is to produce high quality pipe fittings at low prices, welcome to enquire.
American butt weld tee is a key shunt/conversion component in the piping system, which is divided into two types: equal diameter (branch pipe with the same diameter as the main pipe) and non-diameter (branch pipe is smaller than the main pipe), and is widely used in the petroleum, chemical and electric power industries.
American Butt Weld Straight Tee
- ASME/ASTM SA/A 403 WPS (Seamless) ANSI B-16-9
- ASME/ASTM SA/A 403 WPW (Welded) ANSI B16-9
- ASME/ASTM SA/A 403 WPWX (Welded/100% x Ray) ANSI B16-9
American Butt Weld Straight Tee Size and Pressure
| Parameter | Straight tee (NPS 1/2‘-48’) | Reducing tee (NPS 2×2×1‘-24×24×12’) |
| Outside diameter | ±1.5mm（≤NPS 24） | Main pipe tolerance ±1.5mm, branch pipe tolerance ±1.0mm |
| Wall thickness | Sch 10S – Sch XXS | Branch wall thickness ≥ 87.5% of the main wall thickness (ASME requirements) |
| Pressure Rating | Class 3000/6000/9000 | Reducing Tee Pressure Capacity Calculated from Minimum Branch Pipe Diameter |
Material and Temperature
| Material | Low-Temp Limit (°C) | High-Temp Limit (°C) | Critical Failure Mode |
| A234 WPB (Carbon Steel) | -29 | 425 | Graphitization (>425°C) |
| 316L (Stainless Steel) | -196 | 800 | σ-phase Embrittlement (600-900°C) |
| UNS N06625 (Nickel Alloy) | -253 | 1095 | Grain Boundary Oxidation (>1000°C) |
| Duplex Steel 2205 | -50 | 300 | 475°C Embrittlement (Long-Term Exposure) |