SS 304/304L & SS 316/316L Header Plugs, SS 304/304L & SS 316/316L Shoulder Plugs & Industrial Heat Exchanger Sealing Components Supplier in Mumbai, India
Unifit Metal Alloys is a manufacturer and supplier of SS 304/304L and SS 316/316L Header Plugs in Mumbai, India. We supply precision-made header plugs for heat exchangers, air-cooled heat exchangers, boilers and other industrial equipment where individual tubes require reliable closure or isolation during inspection and maintenance.
SS 304/304L Header Plugs are widely selected for their good corrosion resistance, strength and suitability for general industrial service. The low-carbon 304L grade is particularly suitable for applications involving welding and fabrication. SS 316/316L Header Plugs provide enhanced resistance to corrosion in more demanding environments, making them suitable for applications involving chloride-bearing fluids and aggressive process conditions.
SS 304/304L & SS 316/316L Header Plug, SS 304/304L & SS 316/316L Shoulder Plug and Stainless Steel Hex Plug Manufacturer & Supplier in India
These header plugs, also known as Shoulder Plugs, are fitted into heat exchanger header boxes opposite individual tubes. They allow specific tubes to be isolated when leakage or damage occurs while providing convenient access for tube inspection, cleaning and maintenance. This makes them useful for both routine servicing and replacement requirements.
At Unifit Metal Alloys, SS 304/304L and SS 316/316L Header Plugs are available in different sizes, dimensions, thread configurations and designs. We can supply standard as well as customized plugs according to tube diameter, header box configuration, gasket arrangement, technical drawings and application requirements. Our Stainless Steel Header Plugs are used in heat exchangers, air-cooled heat exchangers, fin fan coolers, boilers, condensers, refineries, petrochemical plants, chemical-processing units, oil and gas facilities and power-generation plants.
Get the Best Quote for SS 304/304L & SS 316/316L Header Plugs. We Stock SS 304/304L & SS 316/316L Header Plugs in Various Sizes, Dimensions and Specifications. Contact Us Today for a Competitive Quote.
SS 304/304L And SS 316/316L Header Plug 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 SS 304/304L And SS 316/316L Header Plug
| 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 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 |
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SS 304/304L And SS 316/316L Header Plug Mechanical Properties
| Grade | Tensile Strength (Min) | Yield Strength (Min) | Elongation (Min) | Hardness (Max HBW) |
|---|---|---|---|---|
| SS 304 | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 30% | 187 |
| SS 304L | 485 MPa (70 ksi) | 170 MPa (25 ksi) | 30% | 187 |
| SS 316 | 515 MPa (75 ksi) | 205 MPa (30 ksi) | 30% | 187 |
| SS 316L | 485 MPa (70 ksi) | 170 MPa (25 ksi) | 30% | 187 |
Ready Stock of SS 304/304L And SS 316/316L Header Plug
SS 304/304L And SS 316/316L Header Plug Application Industries
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