Investment Casting
Threaded Tee
What is an Investment Casting Threaded Tee?
A Threaded Tee is a T-shaped fitting with internal threads on all three ends, used to split or combine fluid flow in a pipeline at a 90° intersection. Precision-cast using the investment casting method, threaded tees offer dimensional uniformity, excellent surface finish, and tight sealing in non-welded piping systems.
These fittings are especially useful in chemical plants, fluid skids, food processing lines, and marine applications, where hygiene, corrosion resistance, and easy installation are essential.
Key Features
Leak-Proof
Jointing
Durable
Construction
Easy Installation
& Removal
Wide
Compatibility
Corrosion
Resistant
Specifications
| Specification Category | Parameter / Feature | Details / Options |
|---|---|---|
| Size Range | Nominal Size | ½” to 4″ (custom sizes available) |
| Pressure Ratings | ANSI / ASME Class | Class 150, 300, 600, 900, 1500, 2500 |
| PN Ratings | PN6, PN10, PN16, PN25, PN40, PN64 | |
| Product Types | Investment Casting Fitting | Threaded Tee (Equal / Reducing) |
| Material Options | Carbon Steel | ASTM A216 WCB |
| Stainless Steel | ASTM A351 CF8 / CF8M / CF3 / CF3M | |
| Alloy Steel | ASTM A351 CK3MCuN, CK20MCuN | |
| Nickel Alloy | Inconel, Monel | |
| Standards & Certifications | ASTM | ASTM A351, ASTM A182 |
| ASME / ANSI | ASME B16.11, ASME B1.20.1 | |
| MSS | MSS SP-79, MSS SP-83 | |
| European Standards | EN 10241, EN 10226 | |
| Certifications | ISO 9001, PED 2014/68/EU, NACE MR0175, CE Marked | |
| Design Features | Wall Thickness | As per ASTM / ASME standards, schedule 40, 80 |
| Tee Type | Equal / Reducing | |
| End Connections | Female / Male Threaded | |
| Pressure Class | 2000#, 3000#, 6000#, 9000# | |
| Tolerance | Thread Tolerance | As per ASME B1.20.1 / ISO 7-1 |
| Coating & Surface Finish | Anti-Corrosion Coating | Passivation, Nickel Plating |
| Surface Finish | Mill Finish, Polished, Bead Blasted | |
| Testing & Inspection | Pressure Testing | Hydrostatic, Pneumatic |
| Non-Destructive Testing | Dye Penetrant (DPT), Magnetic Particle (MPI) | |
| Destructive Testing | Tensile, Hardness, Torque Test |
Dimensions
| Fitting Type | Nominal Size (NPS) | Outside Diameter (OD) | Branch Center-to-End (C) | Run Center-to-End (R) | Wall Thickness (WT) | Weight per Piece |
|---|---|---|---|---|---|---|
| Tee (Equal) | ½” × ½” × ½” | 21.3 mm | 28 mm | 28 mm | 2.77 mm | 180g |
| Tee (Equal) | ¾” × ¾” × ¾” | 26.7 mm | 35 mm | 35 mm | 2.77 mm | 250g |
| Tee (Equal) | 1″ × 1″ × 1″ | 33.4 mm | 45 mm | 45 mm | 3.68 mm | 340g |
| Tee (Equal) | 1½” × 1½” × 1½” | 48.3 mm | 60 mm | 60 mm | 3.68 mm | 520g |
| Tee (Equal) | 2″ × 2″ × 2″ | 60.3 mm | 75 mm | 75 mm | 4.78 mm | 720g |
| Tee (Equal) | 3″ × 3″ × 3″ | 88.9 mm | 110 mm | 110 mm | 5.54 mm | 1.2kg |
| Tee (Equal) | 4″ × 4″ × 4″ | 114.3 mm | 140 mm | 140 mm | 6.35 mm | 1.8kg |
| Tee (Reducing) | 1″ × ¾” × 1″ | 33.4 / 26.7 mm | 45 mm | 45 mm | 3.68 mm | 360g |
| Tee (Reducing) | 2″ × 1½” × 2″ | 60.3 / 48.3 mm | 75 mm | 75 mm | 4.78 mm | 950g |
Mechanical Properties
| Property | Value | Unit / Standard |
|---|---|---|
| Tensile Strength | 485 – 750 | MPa (Carbon Steel, Stainless Steel, Alloy Steel, Nickel Alloys) |
| Yield Strength | 170 – 450 | MPa |
| Hardness | 120 – 200 | HB (Brinell) |
| Elongation | ≥ 20 – 30 | % |
| Density | 7.8 – 8.0 | g/cm³ (Carbon Steel), 7.9 – 8.0 g/cm³ (Stainless Steel) |
| Impact Toughness | ≥ 27 – 70 | J (Charpy, grade-dependent) |
| Modulus of Elasticity (E) | ~200 | GPa |
| Fatigue Strength | 250 – 450 | MPa |
| Corrosion Resistance | Good to Excellent (SS > CS > Alloy Steel > Nickel Alloys) | – |
| Thermal Conductivity | 15 – 50 | W/m·K |
| Coefficient of Thermal Expansion | 11 – 17 ×10⁻⁶ | /°C |
| Yield Ratio (YS/UTS) | 0.40 – 0.65 | – |
| Poisson’s Ratio | 0.27 – 0.30 | – |
| Brinell Hardness Range | 120 – 200 | HB |
| Surface Finish | Mill Finish, Polished, Bead Blasted | – |
| End Connections | Butt Weld, Socket Weld, Flanged | – |
| Operating Temperature Range | -46 to 600 | °C (material-dependent) |
| Pressure Rating | Class 150, 300, 600, 900, 1500, 2500 | ASME B16.9, ASME B16.11 |
Chemical Composition
| Element | SS 304 | SS 304L | SS 316 | SS 316L |
|---|---|---|---|---|
| Chromium (Cr) | 18.0 – 20.0 | 18.0 – 20.0 | 16.0 – 18.0 | 16.0 – 18.0 |
| Nickel (Ni) | 8.0 – 10.5 | 8.0 – 12.0 | 10.0 – 14.0 | 10.0 – 14.0 |
| Carbon (C) | ≤ 0.08 | ≤ 0.03 | ≤ 0.08 | ≤ 0.03 |
| Manganese (Mn) | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 |
| Iron (Fe) | Balance | Balance | Balance | Balance |
| Molybdenum (Mo) | — | — | 2.0 – 3.0 | 2.0 – 3.0 |
Applications of Investment Casting Threaded Tees
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
Are threaded tees suitable for sanitary use?
Can you supply reducing tees with mixed threads?
What is the typical lead time for bulk orders?
Are third-party inspections available?
