Phanuphong Steel and Plates, located in the vibrant city of Bangkok, Thailand, stands out as a top-notch manufacturer and supplier of high-quality Alloy Steel Gr B7 Fasteners, tailored to meet a variety of industrial needs. Known for their precision engineering and strict quality standards, this company delivers fasteners that promise durability, reliability, and exceptional performance even in the toughest conditions. With cutting-edge production methods and a strong commitment to customer satisfaction, Phanuphong Steel and Plates caters to industries such as oil and gas, construction, and heavy machinery. Their Alloy Steel Gr B7 Fasteners are specifically crafted to endure high pressure, temperature fluctuations, and mechanical stress, making them the perfect choice for demanding applications.
These fasteners are primarily made from chromium-molybdenum steel, blended with carefully controlled amounts of carbon, manganese, and vanadium. This unique composition grants them impressive tensile strength, hardness, and toughness. Typically, they boast a tensile strength of about 125 ksi (860 MPa) and a yield strength of 105 ksi (725 MPa), ensuring they resist deformation even under heavy loads. Additionally, these fasteners excel in resisting wear, fatigue, and moderate corrosion, making them ideal for high-stress environments. Heat treatment processes like quenching and tempering further boost their mechanical properties, ensuring reliable performance in critical applications.
Specification : ASTM A193 / ASME SA193
Dimension : DIN, ISO, ASTM, JIS, BS, GB, IS and all International Standards
Size Range : M3 – M56 | 3/6″ to 2″ | Custom Sizes
Length : 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 their place in industries that demand high-strength bolting solutions. They are perfect for pressure vessels, piping systems, oil and gas equipment, and heavy machinery, where safety and reliability are crucial. These fasteners are used in flange connections, structural assemblies, and other critical joint applications to maintain integrity under high temperature and pressure conditions. Their durability and mechanical stability make them suitable for both onshore and offshore installations. Phanuphong Steel and Plates guarantees that each fastener meets international standards, ensuring long-lasting performance in various applications.
Phanuphong 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 Bangkok, Thailand.
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