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Lina Fasteners is a trusted manufacturer and supplier located in Tunis, Tunisia, specializing in high-quality Stainless Steel 321 / 321H Stud Bolts designed for high-temperature and critical service applications. These stud bolts are crafted using cutting-edge processes and rigorous quality control, ensuring they deliver outstanding strength, oxidation resistance, and long-lasting stability even at elevated temperatures. Lina Fasteners provides precision-engineered stud bolts that comply with international standards and meet specific project needs. Renowned in the oil & gas, petrochemical, power generation, and refinery sectors, Lina Fasteners guarantees reliable performance, precise dimensions, and timely delivery for demanding industrial settings.
Stainless Steel 321 / 321H Stud Bolts are austenitic alloys that are stabilized with titanium, which helps prevent carbide precipitation during welding and high-temperature use. The Grade 321H variant has a higher carbon content, enhancing its creep and tensile strength at elevated temperatures. These stud bolts are known for their impressive tensile strength, excellent toughness, and resistance to oxidation and intergranular corrosion. They maintain their mechanical stability under thermal stress, exhibit good ductility, and perform consistently in both continuous and intermittent high-temperature conditions.
| Grade | Stainless Steel 321 |
| Specifications | ASTM A193 / ASME SA193, DIN, ASTM, BS and all International Standards |
| Length | 3mm to 200mm |
| Size | M 02 to M 160, Custom Sizes |
| Types | Threaded Rod, Class A double ended stud, Tie Rod, Double Ended Stud, Stud Bolts, Bronze Hex Studs, Threaded Studs etc |
| Element | Ni | C | Mn | P | S | Si | Cr |
| SS 321 | 9.00 – 12.00 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 17.0-19.0 |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| SS 321 | 8.0 g/cm3 | 1454 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 40 % |
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 321 / 321H Stud Bolts find extensive use in high-temperature and pressure environments where strength and corrosion resistance are essential. They are commonly used in heat exchangers, boilers, pressure vessels, exhaust manifolds, and high-temperature piping systems. These bolts are prevalent in oil refineries, petrochemical plants, power generation facilities, and thermal processing industries. Their ability to resist oxidation and thermal fatigue makes them perfect for flanges.
At Lina Fasteners, we ensure premium protection for our Stainless Steel 321/321H stud bolts through meticulous packaging. Each stud bolt undergoes a thorough inspection and is individually wrapped in protective material to prevent damage. They are then securely packed in sturdy, labeled boxes with detailed product specifications and quantities. Our packaging safeguards against environmental factors and physical impacts, ensuring that your high-performance stud bolts arrive in excellent condition, ready for immediate use.
Lina Fasteners is a leading manufacturer and supplier of high-quality fasteners in Tunis, Tunisia, with over 8 years of experience serving global industries.
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