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Mazin Fasteners is a reliable manufacturer and supplier of Stainless Steel 321 / 321H Stud Bolts, proudly based in Muscat, Oman. They specialize in providing dependable bolting solutions designed for high-temperature and corrosive environments. The company follows strict quality control measures and adheres to international standards to guarantee precision, durability, and consistent performance. With state-of-the-art manufacturing facilities and a skilled technical team, Mazin Fasteners produces stud bolts with precise threading and robust strength. Their dedication to material traceability, timely delivery, and unwavering quality makes them a go-to partner for projects in power generation, petrochemicals, and industrial engineering.
Stainless Steel 321 / 321H Stud Bolts are crafted from austenitic stainless steel that’s stabilized with titanium, which helps prevent carbide precipitation when exposed to high temperatures. The 321H grade features a higher carbon content, enhancing its creep and stress-rupture strength at elevated temperatures. These stud bolts boast impressive tensile and yield strength, excellent toughness, and strong resistance to oxidation and intergranular corrosion. Their mechanical properties remain stable even under prolonged heat, ensuring they maintain dimensional stability, reliable load-bearing capacity, and a long service life.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 304L | 0.035 max | 2 max | 1.0 max | 0.045 max | 0.030 max | 18 – 20 | – | 8 – 13 | – |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 550 | Psi – 30000 , MPa – 205 | 35 % |
| Specification | ASTM A 193/ASME SA 193 |
| Standard | all International Standards and ASTM, DIN, BS |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Length | 3 mm to 200 mm | Custom Sizes |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Form | Hex, Threading, Square, Round as per Gauge Etc. |
| Threads | Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically |
| Threads available | UNF, BSW, BSF, METRIC, UNC, or as required |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Certification | Dual Certified As per ASTM & ASME Codes |
| Test Certificate | As per EN 10204 / 3.1 Manufacturer Test Certificate, PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
| Raw materials Source | JSPL, Mukund Steel, Tata Steel, Dhamm Steel, Usha Martin,etc. |
| Packing | IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request |
| Surface Coating | Cadmium Coating Hot Dipped Galvanizing Coating Ptfe Coated Phosphate Coating Teflon Coating Xylon Coating Zinc Coating |
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 are commonly used in high-temperature applications and those involving thermal cycling. You’ll find them in heat exchangers, boilers, furnaces, exhaust systems, petrochemical processing units, and power generation equipment. They’re also essential in piping systems, pressure vessels, and flanged joints that face elevated temperatures and corrosive conditions. These stud bolts are designed to perform reliably under heat, pressure, and vibration. Their strong resistance to oxidation and intergranular corrosion makes them an excellent choice for demanding environments.
Our comprehensive testing for stainless steel 304L stud bolts includes hardness testing, chemical analysis by Spectro analysis, positive material identification (PMI) testing, levelling testing, micro-macro testing, pitting resistance testing, fire testing, and intergranular corrosion testing. We provide the necessary documentation, such as commercial invoices, packaging documents, certificates of origin and guarantees. Our commitment to transparency and traceability ensures that every stud bolt meets rigorous industry standards, providing our customers with confidence and quality.
Mazin Fasteners is a leading manufacturer and supplier of high-quality fasteners in Muscat, OMAN, with over 8 years of experience serving global industries.
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