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Ramu Fasteners, located in Hyderabad, has built a solid reputation as a reliable manufacturer and supplier of top-notch fasteners, with a focus on ASTM A193 B8 CL3 Fasteners. Renowned for their precision, durability, and dependability, the company provides products that adhere to strict industrial and mechanical standards. Each ASTM A193 B8 CL3 Fastener is designed to offer exceptional corrosion resistance, impressive tensile strength, and consistent performance even in tough conditions. Catering to sectors like oil and gas, petrochemical, power generation, and construction, Ramu Fasteners is dedicated to delivering fastening solutions that boost safety, structural integrity, and operational efficiency.
ASTM A193 B8 CL3 Fasteners are crafted from austenitic stainless steel, primarily composed of chromium, nickel, and molybdenum, which grant them remarkable resistance to corrosion, pitting, and crevice attack. These fasteners showcase high tensile strength, toughness, and durability, even under high temperatures and heavy loads. They maintain their shape, resist fatigue, wear, and deformation, and ensure secure torque retention. With precision manufacturing, they feature uniform threads and reliable performance. ASTM A193 B8 CL3 Fasteners blend strength, reliability, and corrosion resistance, making them perfect for critical applications in harsh industrial, chemical, and marine settings.
| Element | B7 | B8 CL3 | B8 CL3M |
| 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% |
| 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 CL3 Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL3M Class 1 | All | 75 | 30 | 30 | 50 |
| B8 CL3 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 | |
| B8 CL2M Class 3 | Up to 3/4 | 110 | 95 | 15 | 45 |
Material | Specification | Standards | Size | Length |
ASTM A193 B8 CL3 Fasteners | IS BS ASTM | DIN, ISO, JIS, GB, IS, BS, ASTM | M 02 to M 160 | 3 mm to 200 mm |
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 B8 CL3 Fasteners find extensive use in the oil and gas, petrochemical, chemical processing, power generation, and marine industries, thanks to their exceptional corrosion resistance and mechanical strength. They are particularly well-suited for securing components in pressure vessels, pipelines, pumps, flanges, boilers, and heat exchangers that are exposed to high temperatures and aggressive environments.
At Ramu Fasteners, we prioritize the safe and efficient packaging of ASTM A193 B8 CL3 fasteners. Each fastener is meticulously inspected and securely packaged in durable, protective materials to prevent damage during transit. Our packaging is designed to maintain the integrity and quality of the fasteners, ensuring they arrive in optimal condition. We offer customized packaging solutions to meet specific customer requirements, reflecting our commitment to excellence and customer satisfaction.
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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