Phanuphong Steel and Plates stands out as a top-notch manufacturer and supplier of high-quality Alloy Steel Fasteners, proudly based in Bangkok, Thailand. We focus on crafting fasteners that deliver exceptional performance, designed to withstand the toughest conditions with strength, durability, and resistance. Committed to upholding international quality standards and utilizing cutting-edge manufacturing techniques, we offer a diverse selection of alloy steel bolts, nuts, washers, and custom fasteners tailored for industries like oil & gas, petrochemical, construction, power generation, and marine. Our fasteners are celebrated for their precision, corrosion resistance, and mechanical strength, making Phanuphong Steel a reliable partner for industrial fastening solutions throughout Thailand and beyond.
Alloy Steel Fasteners are crafted from various alloy grades, including ASTM A193 B7, B16, or A320 L7, and feature elements like Chromium (0.4–1.2%), Molybdenum (0.15–0.6%), Carbon, Manganese, and Vanadium. These alloying components significantly boost tensile strength, toughness, and resistance to wear, heat, and corrosion. Typical mechanical properties showcase tensile strength between 860 to 1000 MPa, a minimum yield strength of 725 MPa, along with impressive hardness and fatigue resistance. Built for high-stress environments, these fasteners guarantee long-lasting reliability in both regular and elevated temperature settings.
Specification :Â ASTM / ASME A/SA 193 / 194
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
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 Fasteners find their place in high-stress, high-temperature, and corrosive settings where standard fasteners might not hold up. They are commonly used in pressure vessels, heat exchangers, pipelines, flanges, and structural assemblies across industries like oil & gas, petrochemicals, power plants, and heavy machinery. Perfect for both onshore and offshore applications, they ensure secure connections in equipment that faces thermal cycling, vibration, and mechanical stress. In construction and infrastructure projects, these fasteners play a crucial role in maintaining structural integrity and safety.
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.
Copyright 2025 Phanuphong Steel. All rights reserved
