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Pipes are an essential component of any industry, ranging from oil and gas to pharmaceuticals, and everything in between. Ensuring you have the right type of pipe for your application is of critical importance, and one material that has been gaining popularity recently is Alloy 20. This material is highly resistant to corrosion and can withstand exposure to corrosive chemicals and high temperatures. We will be discussing everything you need to know about Alloy 20 Welded Pipes.
What is Alloy 20?
Alloy 20 is a nickel-chromium-molybdenum stainless steel that also contains copper and iron, in addition to other trace elements. Alloy 20 Welded Pipe is highly resistant to pitting, crevice corrosion, and stress-corrosion cracking. It is commonly used in applications that involve exposure to corrosive chemicals and high temperatures, such as chemical processing, pharmaceuticals, and petrochemicals. Inconel 600 Welded Pipes, Inconel 690 Welded Pipes and many more grades are also available.
Why Choose Alloy 20 Welded Pipes?
Alloy 20 welded pipes are an excellent choice for applications that require corrosion resistance and high-temperature strength. These pipes are highly resistant to stress-corrosion cracking, erosive attacks, and general corrosion. They also have a low corrosion rate in sulfuric and phosphoric acid solutions, making them an ideal choice for chemical processing and pharmaceutical applications. Different types of products are available, such as Super Duplex Steel Round Bars, Duplex Steel S31803 Seamless Pipes, etc.
Welding Alloy 20 Pipes
Welding Alloy 20 pipes is best done using a gas tungsten arc welding (GTAW) technique, also known as TIG welding. Shielded metal arc welding (SMAW) can also be used, but the heat input must be controlled to avoid microfissuring. The welding material used should also be a matching alloy to ensure the best results. After welding, pipes should be annealed and cooled slowly to avoid thermal shock and potential cracking.
Maintenance and Cleaning of Alloy 20 Pipes
To ensure the longevity of Alloy 20 welded pipes, proper maintenance and cleaning are essential. Pipes should be thoroughly cleaned using a soft-bristle brush and a mild detergent. Avoid using abrasive compounds and wire brushes, as this can damage the material’s surface. Additionally, ensure that the pipes are kept dry to avoid any potential corrosion.
How to Order Alloy 20 Welded Pipes
When ordering Alloy 20 welded pipes, it is essential to specify the right size, schedule, and length of the pipe. Additionally, make sure to specify the type of welding required, whether it be TIG welding or SMAW welding. It is also important to order from a reliable supplier like Navrang Steel that offers high-quality pipes that meet necessary standards.
Table of Content
Alloy 20 welded pipes are commonly used in applications where excellent corrosion resistance is required, such as chemical processing, food processing, pharmaceuticals & petrochemicals.
Alloy 20 welded pipes offer excellent resistance to corrosion, even in highly corrosive environments. They are also easy to fabricate & have good mechanical properties.
The most common welding methods used for Alloy 20 welded pipes are TIG (tungsten inert gas) welding, MIG (metal inert gas) welding & plasma arc welding.
| Specification | ASTM B464 / ASME SB464 |
| Size | 5.0 mm – 1219.2 mm |
| Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
| Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| Thickness Range | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Type | Seamless / ERW / Welded / Fabricated / CDW |
| Form | Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes |
| Length | Single Random, Double Random & Required Length End: Plain End, Beveled End, Treaded |
| End Protection | Plastic Caps |
| Surface Finish | 2B, No.4, No.1, No.8 Mirror Finish for Alloy Welded Pipes, Finish as per customer Requirements |
| Delivery Condition | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
| Schedule | SCH5, SCH10, SCH40, STD, SCH80, SCH160 |
| Pipe End | Plain End, Beveled End, Treaded. |
| UNS Designation & International Equialent for Alloy 20 Welded Pipes | |||||||||
| Type | UNS | WNR. | JIS | EN/DIN | EN/BS | EN/NF | ISO | GB | GOST |
| Alloy 20 | N08020 | 2.4660 | – | NiCr20CuMo | – | – | – | – | – |
| Grade | C | Mn | Si | P | S | Cr | Ni |
| Alloy 20 | 0.02 max | 1 – 2 | 0.7 max | 0.02 max | 0.02 max | 19 – 21 | 32 – 38 |
| Grade | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Alloy 20 | 8.1 g/cm3 | 1443 °C (2430 °F) | Psi – 80000 , MPa – 551 | Psi – 35000 , MPa – 241 | 30 % |
Check ASME B36.19 Alloy 20 Welded Pipe, B464 Alloy 20 Sch 40 Welded Pipe dimensions and thickness chart, SB 729 Alloy 20 Welded Pipe and 20 Alloy DIN 2.4660 Square Welded Pipe price per meter in India
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Navrang Steel is a prominent manufacturer, supplier, stockist and exporter of Pipes, Forged Fittings, Fasteners, and other industrial products. We stock and supply all these products in various materials, such as Stainless Steel, Duplex and Super Steel, Nickel Alloy, inconel, monel, hastelloy, and various other ferrous and non-ferrous materials.
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