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Bilal Fasteners is a reliable manufacturer and supplier of ASTM A193 B7 bolts based in Jakarta, Indonesia. We pride ourselves on providing top-notch fastening solutions that adhere to global standards. Thanks to our cutting-edge manufacturing technology and strict quality control processes, we produce high-strength ASTM A193 B7 bolts that are perfect for tough industrial applications. Our products are well-known for their durability, precision, and reliability, serving industries like oil & gas, petrochemical, construction, and power generation. As a leading supplier in Indonesia, Bilal Fasteners guarantees prompt delivery and outstanding customer service for all your ASTM A193 B7 bolt needs.
ASTM A193 B7 bolts are crafted from a chromium-molybdenum alloy steel that undergoes quenching and tempering to boost their mechanical properties. The chemical makeup includes around 0.30–0.40% carbon, 0.80–1.10% chromium, and 0.15–0.25% molybdenum, with controlled levels of manganese, phosphorus, sulfur, and silicon. These bolts boast impressive mechanical properties, including a minimum tensile strength of 860 MPa (125 ksi), a yield strength of at least 720 MPa (105 ksi), and a maximum Rockwell hardness of HRC 35. These features make ASTM A193 B7 bolts ideal for high-pressure, high-temperature environments that demand exceptional strength and wear resistance.
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.
Bilal Fasteners’ ASTM A193 B7 bolts are widely utilized in industries that require outstanding strength and performance in extreme conditions. They are perfect for flanged connections in pipelines, valves, pressure vessels, and heat exchangers, particularly in the oil & gas and petrochemical sectors. Power generation facilities and structural steel projects also depend on ASTM A193 B7 bolts for their high tensile strength and resistance to temperature fluctuations. With remarkable toughness and wear resistance, these bolts are well-suited for applications in refineries, offshore platforms, and heavy equipment manufacturing.
Bilal Fasteners is a leading manufacturer and supplier of high-quality fasteners in Indonesia, Jakarta, with over 8 years of experience serving global industries.
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