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Ramu Fasteners, located in Hyderabad, has built a solid reputation as a reliable manufacturer and supplier of top-notch industrial fasteners, with a special focus on ASTM A182 F55 fasteners. Known for their quality, precision, and durability, they serve various sectors, including oil and gas, petrochemical, chemical processing, and marine engineering. Their ASTM A182 F55 fasteners are crafted to meet rigorous international standards, providing outstanding corrosion resistance and high strength for tough applications. With a commitment to reliability and customer satisfaction, Ramu Fasteners delivers products that ensure safety and long-lasting performance, making them a go-to choice for industries in need of robust, high-performance duplex stainless steel fasteners.
ASTM A182 F55 fasteners are crafted from super duplex stainless steel, which blends austenitic and ferritic phases to deliver remarkable strength and corrosion resistance. Typically, their composition features 22–23% chromium, 5–6% nickel, 3–5% molybdenum, 0.3% nitrogen, and trace elements that enhance durability. These fasteners boast a tensile strength ranging from 750–950 MPa and a yield strength of 550–750 MPa, along with impressive toughness and hardness. Their duplex microstructure provides resistance to chloride stress corrosion cracking and pitting, making them perfect for highly corrosive and high-pressure industrial settings.
| Element | Content (%) |
|---|---|
| Chromium, Cr | 24 – 26 |
| Nickel, Ni | 4.5 – 6.5 |
| Phosphorous, P | 0.035 Max |
| Carbon, C | 0.03 max |
| Sulfur, S | 0.015 Max |
| Molybdenum, Mo | 3 – 4 |
| Manganese, Mn | 1.2 Max |
| Silicon, Si | 0.8 Max |
| Copper, Cu | Balance |
| Nitrogen, N | 0.25 |
| Iron, Fe | Balance |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) | Hardness Rockwell C (HR C) |
|---|---|---|---|---|
| Alloy GR F55 | 110 | 80 | 15 | 28 max |
| Grade | ASTM A182 GR.F55 |
| Specifications | ASTM A 182 / ASME SA 182 |
| Dimension | DIN, ASTM, BS and all International Standards |
| Length | 3mm to 200mm |
| Size | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Types | Bolts, Nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolt, Stud, Threaded Rod, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, Hexagon Castle Nuts, Hexagon Domed Cap Bolts, Hexagon Thin Nuts etc |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
ASTM A182 F55 fasteners find extensive use in industries that demand exceptional corrosion resistance and high mechanical strength. They are particularly suited for oil and gas platforms, chemical and petrochemical plants, marine equipment, and desalination units. Designed for high-temperature and high-pressure applications, these fasteners are ideal for valves, pumps, heat exchangers, and pressure vessels. Their super duplex stainless steel construction ensures excellent resistance to corrosion, making them a reliable choice for challenging environments where performance and durability are critical.
Our ASTM A182 F55 Fasteners are carefully packed to ensure they remain undamaged during transit. For international shipments, we use robust wooden boxes or cases conforming to global packaging standards. Each fastener bears our trademarked company logo, indicating its Grade, Size, and Lot No. Upon request, we can customize product markings to meet specific customer needs. Additionally, we provide Manufacturer Test Certificates compliant with standards like EN 10204-3.1, EN 10204-3.2, along with Raw Materials Certificates, NABL approved Lab Test Reports, 100% Radiography Test Reports, and Third-Party Inspection Reports, ensuring quality and compliance throughout.
Ramu Fasteners is a leading manufacturer and supplier of high-quality fasteners in Hyderabad, India, with over 8 years of experience serving global industries.
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