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Mazin Fasteners, located in Muscat, Oman, has earned a solid reputation as a reliable manufacturer and supplier of top-notch industrial fasteners, including ASTM A193 B7 stud bolts. These stud bolts are crafted to adhere to strict international standards, guaranteeing precision, strength, and dependable performance in tough industrial settings. You’ll find ASTM A193 B7 stud bolts commonly used in sectors like oil and gas, petrochemicals, power generation, and heavy engineering, where high tensile strength and durability are a must. Thanks to advanced manufacturing techniques and thorough quality control, Mazin Fasteners delivers stud bolts that provide secure, long-lasting, and safe fastening solutions for critical assemblies.
Made from medium-carbon alloy steel, ASTM A193 B7 stud bolts undergo a quenching and tempering process to achieve impressive tensile strength, hardness, and toughness. They boast excellent resistance to wear, fatigue, and high-pressure conditions, making them perfect for high-temperature and high-pressure applications, such as pipelines, flanges, pressure vessels, and structural assemblies.
Material | Specification | Standards | Size | Length |
ASTM A193 B7 Stud Bolt | IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
| B7 | Up to 2-1/2 | 125 | 105 | 16 | 50 |
| 2-5/8 – 4 | 115 | 95 | 16 | 50 | |
| 4-1/8 – 7 | 100 | 75 | 18 | 50 | |
| B8 Class 1 | All | 75 | 30 | 30 | 50 |
| B8M Class 1 | All | 75 | 30 | 30 | 50 |
| B8 Class 2 | Up to 3/4 | 125 | 100 | 12 | 35 |
| 7/8 – 1 | 115 | 80 | 15 | 35 | |
| 1-1/8 – 1-1/4 | 105 | 65 | 20 | 35 | |
| 1-3/8 – 1-1/2 | 100 | 50 | 28 | 45 |
| Element | B7 | B8 | B8M |
| Carbon | 0.37 – 0.49% | 0.08% max | 0.08% max |
| Manganese | 0.65 – 1.10% | 2.00% max | 2.00% max |
| Phosphorus, max | 0.035% | 0.045% | 0.045% |
| Sulfur, max | 0.040% | 0.030% | 0.030% |
| Silicon | 0.15 – 0.35% | 1.00% max | 1.00% max |
| Chromium | 0.75 – 1.20% | 18.0 – 20.0% | 16.0 – 18.0% |
| Nickel | 8.0 – 11.0% | 10.0 – 14.0% | |
| Molybdenum | 0.15 – 0.25% | 2.00 – 3.00% |
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.
ASTM A193 B7 stud bolts are extensively used in industries requiring high strength and durability. They are crucial in petrochemical, oil, and gas sectors for securing pipelines, valves, and flanges in high-pressure and high-temperature environments. Power generation plants utilize these bolts for boilers and turbine assembly. They are also employed in construction for structural reinforcement and in chemical processing plants where corrosion resistance is essential. Their reliability and compliance with stringent standards make them indispensable for critical applications.
You’ll often find ASTM A193 B7 stud bolts in chemical plants, refineries, power stations, and other heavy industrial settings. They’re particularly well-suited for securing flanged connections, pressure equipment, and essential machinery where safety and reliability are crucial. With their outstanding mechanical performance and long service life, ASTM A193 B7 stud bolts are the go-to choice for engineers and contractors looking for trustworthy fastening solutions in demanding industrial environments.
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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