In the heart of Kinshasa, Yoane Steel has established itself as a trusted partner for industrial progress, providing robust solutions where they are needed most. We take pride in supplying high-integrity Alloy Steel Grade B7 fasteners, meticulously sourced to meet the demanding challenges of the region’s growing sectors. Our commitment is to deliver not just products, but reliability and strength, ensuring your projects are built on a foundation of unwavering quality and local expertise you can count on.
The strength of Alloy Steel Grade B7 fasteners comes from a precise blend of chromium and molybdenum, which gives them their signature resilience. These components are heat-treated to achieve exceptional mechanical properties, including a high tensile strength that allows them to withstand significant pressure and stress. This careful engineering results in a fastener that is both tough and durable, offering excellent resistance to creep and relaxation even when faced with elevated temperatures and intense mechanical loads.
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 |
|
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 |
|
DIN 914 |
DIN 7991 |
DIN 939 |
DIN 9021 |
|
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 |
You’ll typically find these dependable fasteners playing a critical role in high-pressure environments, such as securely fastening flanges and components in oil and gas pipelines, power generation plants, and petrochemical refineries. Their ability to maintain a tight seal and structural integrity under extreme heat and pressure makes them indispensable for systems where safety and performance are non-negotiable. Essentially, they are the unsung heroes in any application that demands a fastener you can truly set and forget.
Yoane 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 Kinshasa, Congo.
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