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Lina Fasteners stands out as a top manufacturer and supplier of ASTM A193 B7 Bolts, proudly based in Tunis, Tunisia. We specialize in providing high-strength fastening solutions tailored for critical industrial applications. With cutting-edge manufacturing facilities, precision machining, and strict quality control measures, we ensure our bolts meet ASTM, ASME, and ISO standards. Our clientele spans the oil and gas, petrochemical, power generation, and construction sectors. Renowned for their exceptional strength, durability, and reliability, our standard and customized ASTM A193 B7 Bolts are designed to excel in high-pressure, high-temperature, and demanding environments, guaranteeing long-lasting joint integrity and industrial safety across the globe.
ASTM A193 B7 Bolts are crafted from medium carbon alloy steel, typically undergoing a quenching and tempering process to achieve remarkable strength. Their composition features carbon, manganese, chromium, and molybdenum, which work together to boost tensile strength, hardness, and wear resistance. Mechanically, these bolts showcase impressive tensile and yield strength, along with good toughness and resistance to fatigue and stress. They maintain their shape and stability even under high-pressure and elevated temperature conditions. ASTM A193 B7 Bolts deliver dependable clamping force, high load-bearing capacity, and resistance to deformation, making them perfect for pressure-containing and structural applications in the oil, gas, and industrial sectors.
Material | Specification | Standards | Size | Length |
ASTM A193 B7 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 Bolts find their place in a variety of applications that demand high strength and durability, especially in extreme conditions. They’re commonly used to secure flanges, valves, pumps, pressure vessels, and piping systems in oil and gas refineries, petrochemical plants, and power generation facilities. Additionally, these bolts are essential in construction, mining, and heavy machinery for critical load-bearing joints. They consistently perform well under high pressure, ensuring safety and reliability in the most challenging environments.
Introducing Lina Fasteners’ ASTM A193 B7 Bolts, engineered for superior strength and durability. These high-performance bolts are crafted from high-alloy steel, ideal for demanding applications in extreme temperatures and high-pressure environments. Each bolt meets stringent ASTM standards, ensuring exceptional reliability and safety. Packaged securely to prevent damage, our fasteners come with clear labeling for easy identification. Trust Lina Fasteners for unmatched quality and performance in every project.
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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