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Ramu Fasteners, based in Hyderabad, has built a solid reputation as a reliable manufacturer and supplier of top-notch industrial fasteners, including ASTM A193 B7 Stud Bolts. Renowned for their precision engineering, strength, and dependability, Ramu Fasteners produces stud bolts specifically designed for high-pressure and high-temperature environments. Crafted from high-quality alloy steel and heat-treated for enhanced mechanical performance, their ASTM A193 B7 Stud Bolts meet international quality standards and are extensively utilized across critical industrial sectors. With state-of-the-art manufacturing facilities and rigorous quality control, Ramu Fasteners provides fastening solutions that guarantee durability, safety, and long-lasting operational reliability.
ASTM A193 B7 Stud Bolts are crafted from medium-carbon alloy steel infused with chromium and molybdenum, then quenched and tempered to boost their strength. They boast impressive tensile strength ranging from 125 to 150 ksi, yield strength between 105 and 130 ksi, and an elongation of 12 to 18%, ensuring excellent toughness and load-bearing capabilities. These stud bolts maintain their mechanical integrity even at elevated temperatures and are resistant to fatigue, wear, and mechanical stress. Their robust mechanical properties make ASTM A193 B7 Stud Bolts perfect for high-pressure and high-temperature applications that require reliable and secure fastening.
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 find extensive use in industries that require high-strength fastening under challenging service conditions. They are particularly suited for oil and gas facilities, petrochemical plants, power generation units, and chemical processing industries. Common applications include flanged joints, pressure vessels, boilers, pipelines, heat exchangers, and valve assemblies.
At Ramu Fasteners, we prioritize the safe and secure packaging of our ASTM A193 B7 stud bolts. Each bolt is meticulously packed to prevent damage during transit. We use sturdy, corrosion-resistant materials and ensure proper labeling for easy identification. Our packaging solutions include durable wooden crates, pallets, and customized options to meet specific client needs. By adhering to international packaging standards, we guarantee that our stud bolts arrive in perfect condition, ready for immediate use.
Ramu Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hyderabad, India, with over 8 years of experience serving global industries.
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