Investment Casting
Hose Nipple
What is an Investment Casting Hose Nipple?
A Hose Nipple is a precision-cast fitting designed to connect flexible hoses to rigid piping systems. Manufactured using the investment casting process, it features a barbed or smooth shank on one end for hose connection and an optional threaded, socket weld, or butt weld end on the other for pipeline integration.
Used across fluid transfer lines, air and gas systems, and chemical handling units, hose nipples offer reliable grip, tight sealing, and corrosion resistance, even under varying temperature and pressure conditions.
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 | Hose Nipple (Full, 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 | |
| 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 | Hose Nipple Type | Full Hose Nipple, Reducing Hose Nipple |
| Wall Thickness | As per ASTM / ASME standards, schedule 40, 80 | |
| End Connections | Female / Male Threaded, Socket Weld, Flanged | |
| 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) | Socket Depth (D) | Thread Length (T) | Overall Length (L) | Weight per Piece |
|---|---|---|---|---|---|---|
| Hose Nipple (Full) | ½” | 21.3 mm | 15 mm | 20 mm | 60 mm | 220g |
| Hose Nipple (Full) | ¾” | 26.7 mm | 18 mm | 25 mm | 70 mm | 290g |
| Hose Nipple (Full) | 1″ | 33.4 mm | 20 mm | 30 mm | 80 mm | 350g |
| Hose Nipple (Full) | 1½” | 48.3 mm | 22 mm | 35 mm | 100 mm | 550g |
| Hose Nipple (Full) | 2″ | 60.3 mm | 25 mm | 40 mm | 120 mm | 750g |
| Hose Nipple (Full) | 3″ | 88.9 mm | 35 mm | 50 mm | 150 mm | 1.1kg |
| Hose Nipple (Full) | 4″ | 114.3 mm | 45 mm | 60 mm | 180 mm | 1.7kg |
| Hose Nipple (Reducing) | 1″ × ¾” | 33.4 / 26.7 mm | 20 mm | 25 mm | 80 mm | 300g |
| Hose Nipple (Reducing) | 2″ × 1½” | 60.3 / 48.3 mm | 25 mm | 35 mm | 120 mm | 1.0kg |
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 | Male / Female Threaded, Socket Weld, Flanged | – |
| Operating Temperature Range | -46 to 600 | °C (material-dependent) |
| Pressure Rating | Class 150, 300, 600, 900, 1500, 2500 | 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 Hose Nipples
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What’s the benefit of using a hose nipple?
Are barbed and smooth ends both available?
Can hose nipples be used for food-grade applications?
Are investment casting hose nipples pressure-rated?
