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Hamad Fasteners, based in Riyadh, Saudi Arabia, stands out as a leading manufacturer and supplier of top-notch fastening solutions, earning the trust of industries throughout the Middle East and beyond. With a strong focus on precision, durability, and adherence to international standards, the company provides products designed to excel in even the toughest environments. Among their specialized offerings, ASTM A193 B7 Bolts are particularly renowned for their exceptional strength, toughness, and ability to withstand high temperatures and pressure. Crafted using cutting-edge technology and rigorous quality controls, these bolts are a popular choice for critical industrial applications.
Made from chromium-molybdenum alloy steel, ASTM A193 B7 Bolts undergo heat treatment to achieve outstanding mechanical properties. They boast a tensile strength of around 125 ksi (860 MPa), a yield strength of 105 ksi (720 MPa), and impressive hardness, ensuring they hold up well in high-stress situations. These bolts are designed to resist wear, stress, and thermal cycling, making them incredibly reliable for applications involving elevated temperatures. Their sturdy construction and consistent performance guarantee a long service life, even in heavy-duty conditions.
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% |
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ASTM A193 B7 bolts are widely used in high-stress environments such as oil and gas pipelines, power plants, and petrochemical facilities. Their high tensile strength and resistance to extreme temperatures make them ideal for securing flanges, valves, and heavy machinery. They are also employed in construction projects and structural assemblies where reliability and durability are crucial. Designed to handle severe conditions, these bolts ensure stability and safety in demanding industrial and infrastructure applications.
You’ll find ASTM A193 B7 Bolts widely utilized in sectors like oil and gas, petrochemicals, power generation, and construction. They’re commonly used in flanges, heat exchangers, boilers, valves, and pressure vessels, where high mechanical strength and reliability are essential. Their capacity to endure extreme temperature and pressure conditions makes them indispensable in refinery operations and pipeline systems. Plus, they’re frequently employed in heavy machinery and structural assemblies that demand toughness and durability. With their blend of strength, wear resistance, and heat tolerance, these bolts are the go-to choice for challenging industrial applications.
Hamad Fasteners is one of the Industrial suppliers and manufacturers of quality fasteners in Riyadh, Saudi Arabia, that has spent more than 12 years serving various industries.
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