Stainless Steel Header Plugs, Stainless Steel Shoulder Plugs & Industrial Heat Exchanger Sealing Components Supplier in Mumbai, India
Unifit Metal Alloys is a manufacturer and supplier of Stainless Steel Header Plugs in Mumbai, India, offering precision-made components for tube isolation and sealing applications. Our SS Header Plugs are suitable for heat-transfer equipment where individual tubes may require closure, inspection, cleaning or isolation during operation and maintenance.
Stainless Steel Header Plugs are manufactured and machined to provide accurate fitting within heat exchanger header boxes and related assemblies. Stainless steel is widely selected for these applications because of its corrosion resistance, mechanical strength, clean surface characteristics and suitability for a variety of industrial service conditions.
Stainless Steel Header Plug, Stainless Steel Shoulder Plug and Stainless Steel Hex Plug Manufacturer & Supplier in India
We supply Stainless Steel Header Plugs in commonly used grades such as SS 304, SS 316, SS 304L and SS 316L, depending on the application and operating environment. Different material grades can be selected according to temperature, pressure, fluid characteristics and corrosion requirements.
Our range is available in different sizes, dimensions, pressure ratings, thread configurations and surface finishes. We can supply standard products as well as customized Header Plugs based on customer drawings, tube dimensions and header box requirements. Thread options may include NPT, BSP and BSPT, subject to the required specification. Stainless Steel Header Plugs are widely used in heat exchangers, air-cooled heat exchangers, boilers, condensers, refineries, petrochemical plants, power-generation facilities, chemical-processing units and other industrial equipment.
Get the Best Quote for Stainless Steel Header Plugs. We Stock Stainless Steel Header Plugs in Various Sizes, Dimensions and Specifications. Contact Us Today for a Competitive Quote.
Stainless Steel Header Plugs Specifications
| Parameter | Detail |
|---|---|
| Material Standard | ASTM A182 / ASME SA182 – Grade F304, F304L, F304H, F316, F316L, F321, F321H, F347, F347H |
| Plug Type | Hex Shoulder Plug / Threaded Plug / Blind Plug / Socket Weld Plug / Forged Hex Plug |
| Dimensional Standard | ASME B16.11 · MSS SP-79 · MSS SP-83 · MSS SP-95 · MSS SP-97 · BS 3799 |
| Pressure Class | 2000 LBS · 3000 LBS · 6000 LBS · 9000 LBS |
| Size Range (NPS) | 1/8″ to 4″ · Larger sizes available on request |
| Thread Standard | NPT (ANSI B1.20.1) · BSP · BSPT · UNF · NPSM · Metric ISO 965 |
| Max Service Temperature | SS 304/316: up to 870°C (intermittent); SS 321/347: up to 925°C continuous |
| Surface Finish | As Machined · Electro-polished · Passivated · Pickled & Passivated |
| Test & Inspection | Hardness · Hydrostatic · Dye Penetrant (PT) · Magnetic Particle (MT) · Chemical Analysis · PMI |
| Certifications | EN 10204 3.1 (standard) · 3.2 (on request) · PED · NACE MR0175 / ISO 15156 |
Chemical Composition of Stainless Steel Header Plugs
| Grade | C (Max) | Cr (%) | Ni (%) | Mo (%) | Ti / Nb | Mn (Max) |
|---|---|---|---|---|---|---|
| SS 304 | 0.08 | 18.00–20.00 | 8.00–10.50 | — | — | 2.00 |
| SS 304L | 0.035 | 18.00–20.00 | 8.00–12.00 | — | — | 2.00 |
| SS 304H | 0.04–0.10 | 18.00–20.00 | 8.00–10.50 | — | — | 2.00 |
| SS 316 | 0.08 | 16.00–18.00 | 10.00–14.00 | 2.00–3.00 | — | 2.00 |
| SS 316L | 0.035 | 16.00–18.00 | 10.00–14.00 | 2.00–3.00 | — | 2.00 |
| SS 321 | 0.08 | 17.00–19.00 | 9.00–12.00 | — | Ti ≥ 5×C | 2.00 |
| SS 347 | 0.08 | 17.00–19.00 | 9.00–13.00 | — | Nb ≥ 10×C | 2.00 |
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Stainless Steel Header Plugs Mechanical Properties
| Grade | Tensile Strength (Min) | Yield Strength (Min) | Elongation (Min) | Hardness (Max HBW) |
|---|---|---|---|---|
| SS 304 / 304H | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 30% | 187 |
| SS 304L | 485 MPa (70 ksi) | 170 MPa (25 ksi) | 30% | 187 |
| SS 316 / 316H | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 30% | 187 |
| SS 316L | 485 MPa (70 ksi) | 170 MPa (25 ksi) | 30% | 187 |
| SS 321 | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 30% | 187 |
| SS 321H | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 30% | 187 |
| SS 347 / 347H | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 30% | 187 |
Ready Stock of Stainless Steel Header Plugs
Stainless Steel Header Plugs Application Industries
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