Okoye Nickel Alloys is a reputable manufacturer and supplier of Monel 400 Pipes based in Kinshasa, Congo. They’re known for delivering top-notch pipes that boast impressive corrosion resistance, strength, and durability. These pipes are meticulously engineered to perform reliably in tough industrial, marine, and chemical settings. Okoye Nickel Alloys provides Monel 400 Pipes in a variety of sizes, diameters, wall thicknesses, and forms, including both seamless and welded options, all crafted to meet international quality standards. The company caters to industries like chemical processing, marine engineering, offshore oil and gas, desalination, and power generation, offering high-performance piping solutions for critical applications.
Monel 400 Pipes are mainly made from a nickel-copper alloy, typically containing 66% nickel and 31–34% copper, along with trace amounts of iron and manganese to boost mechanical strength and corrosion resistance. This unique composition gives them excellent resistance to seawater, alkalis, hydrofluoric acid, and other harsh substances. With a tensile strength of around 620 MPa, yield strength of 275 MPa, and an elongation of 35%, these pipes ensure mechanical stability and reliability. The alloy retains its toughness, ductility, and dimensional integrity even at high temperatures while effectively resisting stress corrosion cracking and embrittlement.
Monel 400 Seamless Pipes : ASTM B165, ASTM B725, ASME SB165, ASME SB725
Monel 400 Welded Pipe : ASTM B725, ASTM B730, ASME SB725, ASME SB730
Standard : ASTM, ASME and API
Length : Single Random, Double Random & Required Length
Types : Seamless / ERW / Welded / Fabricated / CDW
Form : Round Pipes/Tubes, Tubes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes
End : Plain End, Beveled End, Treaded
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr |
| Monel 400 | 0.30 max | 2.00 max | 0.50 max | 0.24max | 28.0-34.0 | 2.50 max | 63.00 min | – |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Monel 400 | 8.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80,000 , MPa – 550 | Psi – 35,000 , MPa – 240 | 40 % |
At Okoye Nickel Alloys, we take pride in being the largest supplier, exporter, and manufacturer of Monel 400 Pipes Fittings in Kinshasa, Congo, providing cutting-edge solutions for all your piping needs. Our state-of-the-art production plants are strategically located in the Congo, allowing us to maintain a vast inventory of over 16,000 tons of premium-quality materials readily available in stock. We are dedicated to delivering superior products and services, ensuring reliability and excellence for our global clientele.
Contact us to get a quick quote for your requirement.
Monel 400 Pipes are widely utilized in situations that demand corrosion-resistant, durable, and high-performance piping. They’re perfect for seawater piping systems, condensers, heat exchangers, desalination plants, and in chemical and petrochemical processing, as well as marine and offshore platforms. These pipes create secure, leak-proof, and long-lasting flow systems in environments that are exposed to brine, seawater, and other corrosive materials. Thanks to their outstanding mechanical strength, corrosion resistance, and longevity, Monel 400 Pipes guarantee reliable, maintenance-free performance in challenging industrial and marine applications.
