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Aria Fasteners, located in Hamilton, New Zealand, is your go-to source for top-notch ASTM A193 B7 bolts. These bolts are crafted with strength, durability, and reliability in mind, making them perfect for high-pressure, high-temperature, and demanding industrial settings. At Aria Fasteners, we take pride in ensuring that each bolt meets rigorous quality standards, so you can trust that they will maintain structural integrity, resist wear, and perform consistently even under heavy loads and vibrations. They’re the ideal choice for critical assemblies where safety, performance, and long-lasting reliability are a must.
Made from high-strength alloy steel, ASTM A193 B7 bolts boast impressive tensile strength, toughness, and resistance to wear and fatigue. They’re built to handle extreme pressure and elevated temperatures, ensuring secure fastening in tough environments. Their mechanical stability under stress and vibration means you can count on them for reliable performance in essential industrial applications.
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 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.
These bolts find their place in various industries, including oil and gas, power generation, chemical processing plants, and high-pressure piping systems. They work seamlessly with ASTM A193 B7 nuts and washers in flange connections, pressure vessels, and other bolted assemblies where strength and durability are paramount. With Aria Fasteners’ ASTM A193 B7 bolts, you get long-lasting performance, structural integrity, and less maintenance, making them the preferred choice for industries that demand high-strength and dependable fastening solutions.
Aria Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hamilton, New Zealand, with over 8 years of experience serving global industries.
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