Esha Steel is a well-respected manufacturer and supplier of top-notch Alloy Steel Gr B7 Fasteners, proudly based in Kolkata. They specialize in providing durable and precision-engineered fastening solutions that are crucial for various industrial applications. With cutting-edge manufacturing facilities and a strong commitment to quality control, Esha Steel adheres to international standards, ensuring that every fastener boasts superior strength, reliability, and long-lasting performance. Their Alloy Steel Gr B7 Fasteners are particularly appreciated for their excellent corrosion resistance, mechanical toughness, and impressive load-bearing capacity. Catering to industries like oil and gas, petrochemicals, power generation, and heavy engineering, Esha Steel consistently delivers products that blend precision, durability, and efficiency, earning the trust of customers through timely deliveries and outstanding quality.
These Alloy Steel Gr B7 Fasteners are crafted from high-grade alloy steel, enhanced with chromium, molybdenum, and nickel to boost their mechanical strength, hardness, and corrosion resistance. They showcase remarkable tensile strength, wear resistance, and toughness. On a mechanical level, they offer dimensional stability, high fatigue resistance, and reliable performance even under extreme temperatures and pressure. Their robust chemical and mechanical properties guarantee long-term durability, making Alloy Steel Gr B7 Fasteners perfect for critical applications that demand strength, resilience, and dependable performance in challenging industrial settings.
Specification :Â ASTM A193 / ASME SA193
Dimension :Â DIN, ISO, ASTM, JIS, BS, GB, IS and all International Standards
Size Range :Â M3 – M56 | 3/6″ to 2″ | Custom Sizes
Length :Â 3 mm to 200 mm
| Alloy Steel B7 | C | Mn | Si | P | S | Mo | Cr |
| 0.08-0.15 | 1.00 max | 1.00 max | 0.040 | 0.030 | 0.15-0.25 | 11.50-13.50 |
| Grade | Diameter | Tensile Strength | Yield Strength | Elongation | Reduction | Hardness |
| Grade B7 | M64 and under | 860 | 720 | 16 | 50 | 321 HBW or 35 HRC |
| Over M64 to M100 | 795 | 655 | 16 | 50 | 321 HBW or 35 HRC | |
| Over M100 to M180 | 690 | 515 | 18 | 50 | 321 HBW or 35 HRC |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
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Hexagon Bolts / Set Screws |
Stud Bolts |
Hexagon Nuts |
Socket Capscrews |
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DIN 931 |
BS4882 |
DIN 934 |
DIN 912 |
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DIN 933 |
DIN 976 |
BS 1768 |
DIN 6912 |
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BS 1768 |
BS 1769 |
DIN 7984 |
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UNI 5731 |
BS 1083 |
ANSI B18.3 |
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UNI 5739 |
BS 3692 |
ISO 4762 |
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ISO 4014 |
ISO 4032 |
UNI 5931 |
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ISO 4017 |
ISO 4033 |
BS 2470 |
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BS 1769 |
ANSI B18.2.2 |
BS 4168 |
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BS 3692 |
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ANSI B18.2.1 |
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Socket & Slotted Set Screws |
Socket & Slotted Countersunk Screws |
Studs |
Washers |
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DIN 913 |
DIN 963 |
DIN 938 |
DIN 125 |
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DIN 914 |
DIN 7991 |
DIN 939 |
DIN 9021 |
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DIN 915 |
BS 4168 |
DIN 2510 |
BS 4320 |
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DIN 916 |
BS 1981 |
BS 4439 |
BS 3410 |
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DIN 551 |
BS 483 |
BS 2693 |
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DIN 553 |
BS 2470 |
Spring Washers |
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DIN 438 |
DIN 127 |
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BS 4168 |
BS 4464 |
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BS 1802 |
Alloy Steel Gr B7 Fasteners find extensive use in industries that require high-strength, corrosion-resistant, and reliable fastening solutions. In the oil and gas sector, they are essential for pipeline assemblies, flanged joints, and valve connections. The petrochemical and refinery industries rely on them for pressure vessels, high-temperature piping systems, and process equipment. Additionally, they are utilized in power generation, heavy engineering, and construction applications where mechanical strength, thermal resistance, and durability are vital. Their exceptional toughness and load-bearing capabilities make them a go-to choice for demanding environments.
Esha 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 Kolkata India.
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