Operating from the heart of Abuja, Nigeria, Samuel Steels is a trusted partner for industrial progress, dedicated to supplying the essential components that build our nation’s infrastructure. We take pride in offering the Alloy Steel Gr B7M Screw, a fastener engineered for the most demanding environments. This isn’t just a simple bolt; it’s a critical piece of technology designed to ensure safety, reliability, and longevity in projects where failure is not an option, from towering construction sites to complex energy installations.
The strength of the Alloy Steel Gr B7M Screw comes from its specialized composition, primarily chromium and molybdenum, which is carefully balanced through a precise heat treatment process. This gives the screw its signature mechanical properties, including a high tensile strength that allows it to bear significant loads. Most importantly, this specific grade is defined by its controlled hardness, which is intentionally limited to provide superior resistance to sulfide stress cracking, a common threat in corrosive settings.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | IS, ASTM, BS and all International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Screw, Socket Head Cap Screw, Socket Set Screws, Anchor Screw, Blind Rivet, Concrete screw, Threaded Screw, Steel Shoulder Screw, Panel Screw, Machine Screw. |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Alloy Steel Gr B7M Screws consist of molybdenum and chromium, which increase their hardness, strength, and resistance to high temperatures. They are quenched and tempered and then come up to ASTM A193 standards and are treated further to reduce their hardness and are thus suitable for corrosive atmospheres. These screws have a minimum tensile strength of 100 ksi and yield strength of 75 ksi, with favorable elongation properties. The controlled hardness features them as perfect for application in pressure systems, where toughness and resilience are imparted under severe operating conditions.
You will typically find these screws hard at work in challenging conditions where standard fasteners would quickly deteriorate. They are indispensable in the oil and gas industry for wellheads, Christmas trees, and pipeline systems, especially where sour gas containing hydrogen sulfide is present. Beyond energy, they are crucial for chemical processing plants, high-pressure valves, and structural applications in coastal areas, providing a dependable link that ensures the integrity and safety of the entire assembly for years to come.
Samuel 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 Abuja, Nigeria.
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