Marzouk Steel, headquartered in Tunis, Tunisia, is a leading manufacturer and supplier of premium steel products, serving industries that demand strength, precision, and reliability. Among its specialized offerings are Alloy Steel GR 7 Stud Bolts, engineered for high-pressure, high-temperature, and critical mechanical applications. Manufactured with advanced technology and stringent quality control, GR 7 stud bolts provide exceptional tensile strength, toughness, and corrosion resistance. Marzouk Steel ensures that every GR 7 bolt meets international standards, offering engineers and fabricators a dependable fastening solution for power plants, petrochemical facilities, oil and gas equipment, and heavy industrial machinery.
Alloy Steel GR 7 Stud Bolts are manufactured from high-grade chromium-molybdenum alloy steel, providing superior tensile strength, hardness, and thermal resistance. Their chemical composition, including carbon, chromium, and molybdenum, enhances toughness, fatigue resistance, and corrosion resistance. GR 7 bolts respond effectively to heat treatment, optimizing mechanical properties such as yield strength, tensile strength, and impact resistance. With excellent structural integrity under extreme pressure and high-temperature conditions, GR 7 stud bolts are ideal for demanding industrial applications requiring long-term reliability, safety, and consistent performance.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to B7 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts |
| Alloy Steel B7 | C | Mn | P | S | Si | Cr | Mo |
| 0.37-0.49 | 0.65-1.10 | 0.035 Max | 0.04 Max | 0.15-0.35 | 0.75-1.20 | 0.15-0.25 |
| 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 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Marzouk Steel is a trusted manufacturer and supplier of high-quality Alloy Steel Gr 7 Stud Bolts in Tunis, Tunisia. We specialize in premium steel products, including Alloy Steel, Carbon Steel, Mild Steel, and Galvanized Steel, with a strong focus on Carbon Steel Sheets and Plates. Our extensive inventory also includes Pipes, Tubes, Flanges, Forged Fittings, and Bars. Committed to fast delivery and exceptional customer service, we use only the finest raw materials to ensure superior strength, corrosion resistance, and durability for critical industrial applications. Contact us today for all your Alloy Steel Gr 7 Stud Bolt requirements!
Alloy Steel GR 7 Stud Bolts are widely used in industries that require high-strength, reliable fasteners capable of withstanding harsh operating conditions. They are commonly applied in boilers, heat exchangers, turbines, petrochemical plants, oil and gas pipelines, and heavy industrial machinery. Designed to endure high pressures, elevated temperatures, and cyclic loads, GR 7 bolts maintain structural integrity and provide secure fastening. Engineers and fabricators rely on GR 7 bolts for critical applications where durability, safety, and operational efficiency are essential. Their combination of toughness, thermal stability, and mechanical strength ensures dependable performance in demanding industrial environments.
Marzouk Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Tunis, Tunisia.
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