Marzouk Steel, located in Tunis, Tunisia, has built a solid reputation as a reliable manufacturer and supplier of top-notch Alloy Steel Gr B7M bolts. These bolts are celebrated for their remarkable strength, carefully controlled hardness, and precision engineering, making them perfect for demanding industrial applications. Thanks to advanced manufacturing techniques and strict quality control measures, Marzouk Steel guarantees that every Gr B7M bolt performs reliably, ensuring safety and a long lifespan. The company caters to various sectors, including oil and gas, petrochemical, power generation, and heavy engineering, providing fastening solutions that boast superior tensile strength, corrosion resistance, and mechanical stability for tough operational conditions.
Alloy Steel Gr B7M bolts are crafted from high-quality alloy steel that includes carbon, chromium, and molybdenum, all designed to deliver high strength with controlled hardness. These bolts showcase impressive mechanical properties, featuring a tensile strength of about 860–1,030 MPa, yield strength around 720–860 MPa, and an elongation of 8–12%. After undergoing heat treatment and stress relief, Gr B7M bolts gain enhanced toughness, fatigue resistance, and improved ductility, which helps minimize the chances of hydrogen embrittlement and stress corrosion cracking in high-pressure and high-temperature settings.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to B7M 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 B7M | 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 |
|---|---|---|---|---|---|
| B7M | 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 B7M 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 Sheet 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, durability and performance for critical industrial applications. Contact us today for all your Alloy Steel Gr B7M Bolts​ needs!
These Alloy Steel Gr B7M bolts find extensive use in the oil and gas, petrochemical, refinery, and power generation industries. They are particularly well-suited for fastening flanges, pressure vessels, pipelines, valves, and structural components that operate under high pressure and elevated temperatures. With their excellent reliability, controlled mechanical performance, and extended service life, engineers and industrial operators often choose Alloy Steel Gr B7M bolts for critical applications that demand secure fastening, safety, and durability in harsh, corrosive, and high-risk 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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