Phanuphong Steel and Plates, a top-notch manufacturer and supplier located in Bangkok, Thailand, is all about high-quality Alloy Steel Gr B7 Washers. Known for their precision engineering and durability, this company offers washers that meet strict international standards. Perfectly designed for industrial and mechanical applications, these washers guarantee secure fastening, improved load distribution, and long-lasting performance. With a strong commitment to excellence, Phanuphong Steel serves a variety of industries, from oil and gas to construction, providing reliable solutions that can handle extreme conditions. Their vast inventory and customized services make them a go-to partner for engineers and procurement professionals in search of top-tier alloy steel components.
Alloy Steel Gr B7 Washers are mainly made from carbon steel, with added chromium and molybdenum to boost strength and corrosion resistance. These washers boast impressive tensile strength, usually around 125 ksi, and a yield strength of about 105 ksi. They can be heat-treated, achieving hardness values between 28 and 32 HRC, and show remarkable toughness even under high-pressure and high-temperature situations. The material is also resistant to wear and fatigue, ensuring dependable performance in demanding mechanical setups. Their precise dimensional tolerances and consistent metallurgical properties make them perfect for critical fastening tasks in industrial machinery and piping systems.
| Specifications | : | ASTM A 194 ASME SA 194 |
| 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 GR 7 | C | Mn | P | S | Si | Mo | Cr |
| 0.37-0.49% | 0.65-1.10% | 0.04% | 0.04% | 0.15-0.035% | 0.15-0.25% | 0.75-1.20% |
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min |
|---|---|---|---|---|---|
| B7 | 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 B7 Washers find their place in heavy-duty bolted assemblies across the oil, gas, and petrochemical industries, as well as in power generation and construction. They’re used in high-pressure pipelines, pressure vessels, flanges, and machinery where secure load distribution is essential. These washers help prevent bolt loosening due to vibration and thermal cycling, boosting joint integrity. Plus, they’re well-suited for high-temperature environments and corrosive conditions, making them vital in chemical plants and refineries. Their versatility truly sets them apart in the industry.
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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