Phanuphong Steel and Plates, based in Bangkok, Thailand, has earned a solid reputation as a reliable manufacturer and supplier of top-notch industrial fasteners, including Alloy Steel Gr 7 Stud Bolts. With a strong focus on quality, durability, and adherence to international standards like ASTM A320, Phanuphong caters to various sectors such as oil & gas, power generation, chemical processing, and marine engineering. The company boasts an extensive inventory and offers custom-fabricated solutions to meet the specific needs of demanding applications. Known for their dependable service and competitive pricing, Phanuphong Steel is a go-to choice throughout Thailand and Southeast Asia for high-performance bolting components designed for low-temperature and high-pressure environments.
Alloy Steel Gr 7 Stud Bolts are crafted from low-temperature modified chromium-molybdenum steel, featuring essential elements like carbon (max 0.35%), manganese (0.40–1.00%), phosphorus (max 0.035%), sulfur (max 0.040%), silicon (0.15–0.35%), and vanadium (0.15–0.30%). These bolts undergo heat treatment to enhance their strength and are stress-relieved to maintain dimensional stability. They deliver a minimum tensile strength of 100 ksi, yield strength of 75 ksi, and an elongation of 20%. Designed to excel in low temperatures, Gr 7 bolts ensure reliable performance in cold, corrosive, and high-pressure settings.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to B7 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts |
| Alloy Steel B7 | 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 |
|---|---|---|---|---|---|
| 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.
Phanuphong Steel is a trusted manufacturer and supplier of high-quality Alloy Steel Gr 7 Stud Bolts in Bangkok, Thailand. We specialize in premium steel products, including Alloy Steel, Carbon Steel, Mild Steel, and Galvanized Steel, with a strong focus on Carbon Steel Sheets and Plates. Our extensive inventory also includes Pipes, Tubes, Flanges, Forged Fittings, and Bars. Committed to fast delivery and exceptional customer service, we use only the finest raw materials to ensure superior strength, corrosion resistance, and durability for critical industrial applications. Contact us today for all your Alloy Steel Gr 7 Stud Bolt requirements!
Alloy Steel Gr 7 Stud Bolts find extensive use in low-temperature service applications where strength and impact resistance are paramount. You’ll often see them in cryogenic systems, LNG facilities, power plants, and offshore drilling platforms, where they perform consistently in sub-zero conditions without sacrificing structural integrity. They’re perfect for bolting pressure vessels, flanges, and valves in chilly environments, especially within the chemical and petrochemical industries. Their superior mechanical properties make them a trusted choice for demanding 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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