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Rinku Fasteners is a prominent manufacturer and supplier based in Kolkata, India, known for producing top-notch Stainless Steel 304H Bolts that excel in high-temperature and demanding industrial settings. Crafted from premium materials and utilizing cutting-edge manufacturing techniques, these bolts offer outstanding strength, durability, and resistance to corrosion. With a commitment to precision, reliability, and compliance with global standards, Rinku Fasteners delivers fastening solutions tailored for sectors like petrochemical, power generation, heat exchangers, and industrial processing. Their SS 304H Bolts are trusted for their robust performance, longevity, and consistent quality across various applications.
Stainless Steel 304H Bolts are high-carbon austenitic stainless steel fasteners that include chromium (18–20%), nickel (8–11%), and a higher carbon content to boost high-temperature strength. This grade is known for its impressive mechanical properties, such as high tensile strength, strong yield strength, and excellent creep resistance at elevated temperatures. SS 304H also offers good corrosion and oxidation resistance, along with thermal stability, making it perfect for continuous heat exposure. The added carbon enhances toughness and structural integrity, ensuring dependable performance in high-pressure and high-temperature scenarios.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 304H | min. | 0.04 | – | – | – | – | 18.0 | – | 8.0 | – |
| max. | 0.10 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | – | 10.5 | – | |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304H | 515 | 205 | 40 | 92 | 201 |
| Grade | Stainless Steel 304H |
| Specifications | ASTM A193 / ASME SA193 |
| Standard | DIN, ASTM, BS and all International Standards |
| Length | 3mm to 200mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Types | U- Bolts, J Bolts, Mushroom Head Square Neck Bolts, Bolts, Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw Anchor Bolt, T-Head Bolts, Eye Bolt, Foundation Bolts, Structural Bolts. |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Stainless Steel 304H Bolts find extensive use in industries that demand reliable performance in high temperatures and corrosive environments. They are particularly suited for heat exchangers, boilers, pressure vessels, condensers, and high-temperature processing equipment. Industries such as petrochemical, oil and gas, pharmaceuticals, chemicals, and power generation frequently rely on these bolts due to their superior thermal stability and overall performance.
Our commitment to quality is demonstrated by the rigorous testing procedures we apply to all our Stainless Steel 304H bolts before delivery. Some advanced tests include hardness, chemical analysis by Spectro analysis, positive material identification (PMI), levelling, micro-macro, pitting resistance, flare, and intergranular corrosion (IGC) tests. Among these high standards, we also issue commercial invoices and packaging lists; we provide necessary documents such as certificates of origin and documents proving the legality of the Trade Group or Embassy. To further ensure customer satisfaction, we offer third-party inspection certificates, proving our 304H bolts are quality and reliable for various applications.
Rinku Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kolkata, India, with over 8 years of experience serving global industries.
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