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Rinku Fasteners, based in Kolkata, India, is a top-notch manufacturer and supplier of high-quality Copper Nickel 90/10 Stud Bolts, designed specifically for tough marine and industrial settings. These stud bolts are crafted with precision to ensure outstanding corrosion resistance, strength, and durability, even in the harshest seawater or brackish conditions. Rinku Fasteners follows strict international standards, guaranteeing dependable performance and a long lifespan. Commonly found in marine engineering, desalination plants, chemical processing, and power generation, Copper Nickel 90/10 Stud Bolts provide secure fastening solutions where resistance to corrosion, biofouling, and mechanical stress is crucial for essential operations.
Copper Nickel 90/10 Stud Bolts are made up of about 90% copper and 10% nickel, with small amounts of iron and manganese added to boost their mechanical strength and corrosion resistance. This alloy is known for its remarkable ability to withstand seawater, brine, and chemical corrosion. The bolts showcase high tensile strength, excellent ductility, and toughness across a broad temperature range. Their unique composition ensures they remain stable, resist biofouling, and perform reliably over the long haul in challenging marine and industrial environments. Copper Nickel 90/10 Stud Bolts are perfect for applications that demand both mechanical durability and top-notch corrosion protection.
| Grade | Cu | Mn | Pb | Ni | Fe | Zn |
| Cupro Nickel 90/10 | 88.6 min | 1.0 max | 0.05 max | 9-11 max | 1.8 max | 1 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Cupro Nickel 90/10 | 0.323 lb/in3 at 68 F | 2260 F | 50000 psi | 20000 psi | 30 % |
| Specifications | ASTM B151 / ASME SB151 |
| Standard | DIN, ISO ,JIS ,GB, IS, BS, ASTM and all International Standards |
| Size | M3 – M100 | 3/6″ – 4″ | Custom Sizes |
| Length | 3 mm – 200 mm | Custom Sizes |
| Dimensions | DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3 |
| Threads available | UNF, BSW, BSF, METRIC, UNC, or as required |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Form | Hex, Threading, Square, Round as per Gauge Etc. |
| Head | Hex, Square, Round, Hex flange, Flat, T-head & Triangular etc. |
| Neck type | Hex, Square, Triangular, Oval & Knurled etc. |
| Surface Treatment | Passivation /plain |
| Others Factor | OEM, ODM, ±0.03MM tolerance |
| Manufacturing Process | Wire Drawing, Cold Heading, Insert tapping, Heat Treatment, Surface Plating, Inspection, Packing. |
| Packing | IN BULK: carton, pallet, Small Boxes or customer request |
| Surface Coating | Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request |
| Test Certificate | As per EN 10204 / 3.1 Manufacturer Test Certificate, PED 97/23/EC Certified, Merk blatt AD 2000 W2 Certified |
| Certification | Dual Certified As per ASTM & ASME Codes |
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.
Copper Nickel 90/10 Stud Bolts find extensive use in industries where corrosion resistance and mechanical strength are paramount. They’re particularly suited for shipbuilding, offshore platforms, seawater piping systems, and desalination plants, thanks to their impressive resistance to seawater corrosion and biofouling. Additionally, these stud bolts are utilized in chemical processing equipment, heat exchangers, condensers, and power generation systems.
Our Stud Bolts Copper Nickel 90/10 at Rinku Fasteners are packed in a way that retains their quality. Stud bolts are protected and packed individually in moisture proof containers to avoid any harm or contamination to the bolts. Proper labeling makes identification and handling to be easy since anyone can identify the product just by looking at the label. The packaging process ensures that the stud bolts are properly packed to ensure that they are not damaged during transport and are ready for use as soon as they get to the end user, thus our promise of quality product and excellent customer service.
Rinku Fasteners is a leading manufacturer and supplier of high-quality fasteners in Kolkata, India, with over 8 years of experience serving global industries.
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