Marzouk Steel, headquartered in Tunis, Tunisia, is a leading manufacturer and supplier of premium steel products, catering to industries that demand strength, precision, and durability. Among its specialized offerings are Alloy Steel GR B7M Washers, designed for high-strength fastening applications in critical industrial environments. Manufactured using advanced technology and stringent quality control, GR B7M washers provide excellent tensile strength, hardness, and corrosion resistance. Marzouk Steel ensures that every GR B7M washer meets international standards, delivering reliable solutions for oil and gas pipelines, petrochemical plants, power generation equipment, heavy machinery, and construction projects where secure connections are essential.
Alloy Steel GR B7M Washers are made from chromium-molybdenum (Cr-Mo) alloy steel, engineered for superior tensile strength, hardness, and wear resistance. Their chemical composition, including carbon, chromium, and molybdenum, enhances toughness, fatigue resistance, and corrosion protection. These washers undergo precise heat treatment to optimize mechanical properties such as yield strength, tensile strength, and impact resistance. GR B7M washers are ideal for applications requiring secure, long-lasting connections under high stress, vibration, and elevated temperatures, ensuring consistent performance in demanding mechanical and industrial operations.
| 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 | : | Flat Washer, Lock Washer, Sealing Washer, Split Washer, Slot Washer, Machine Washer, Star Washer SPRINGS – Wire Spring & Flat Spring. |
| 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.
Alloy Steel GR B7M Washers are widely used in industries requiring strong, reliable, and high-performance fastening solutions. They are commonly applied in oil and gas pipelines, petrochemical plants, power generation equipment, heavy machinery, construction machinery, and industrial equipment. Designed to distribute load, prevent loosening, and enhance joint stability, GR B7M washers maintain secure connections under high stress, vibration, and thermal cycling. Engineers and fabricators rely on these washers for critical applications where safety, durability, and operational efficiency are essential. Their combination of hardness, tensile strength, and corrosion resistance 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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