Monel 400 Seamless Pipe for Oil and Gas
Gnee Steel
Monel 400 Seamless Pipe for Oil and Gas
Monel 400 seamless pipe offers excellent corrosion resistance in harsh oil and gas environments, including high-salinity seawater and various acidic environments. It also possesses good mechanical properties and high-temperature resistance. Its key advantages include resistance to a wide range of corrosive fluids, good strength and toughness, and excellent high-temperature performance. However, this type of pipe is expensive and difficult to machine and weld, requiring meticulous handling and maintenance to ensure its service life and prevent issues such as galvanic corrosion.

Gnee Steel
What is the ASTM standard for Monel 400?
Monel 400 has multiple ASTM standards depending on the product form, such as ASTM B127 for plate, sheet, and strip, ASTM B163 and B165 for seamless and welded pipe, and ASTM B164 for bar. Other standards include ASTM B564 for flanges and AMS (Aerospace Material Specification) for specific applications, such as AMS 4574.

Stock Size Range and Specifications For Monel 400 Seamless Pipe for Oil and Gas
| Specification | ASTM B165, B725 / ASME SB165, SB725 |
| Dimension Standard | ANSI B36.19M, ANSI B36.10 |
| Outside Diameter | 1.250″ – 6.000″ (30-150mm) |
| Size | 15″NB – 150″NB |
| Wall Range | 0.095″ – 1.000″ (.2.5-25mm) |
| Type | Seamless / ERW / Welded / Fabricated Pipes |
| Form | Round, Square, Rectangular, Oval, Hydraulic Etc |
| Length | Single Random, Double Random & Required Length |
| End | Plain End, Beveled End, Treaded |
| End Protection | Plastic Caps |
| Delivery Condition | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
| Inspection, Test Reports | Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports |
| Packing | Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests |
| Specials | Sizes and Specifications other than above can be manufactured on request |
Chemical Composition of Monel 400 Pipes
| Grade | C | Mn | Si | S | Cu | Fe | Ni |
| Monel 400 | 0.30 max | 2.00 max | 0.50 max | 0.024 max | 28.00 – 34.00 | 2.50 max | 63.00 min |
Mechanical Properties of Monel 400 Pipe for Oil and Gas
| 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 % |
Markings on Monel 400 Pipe
Full identification of the pipe should be continuous along its entire length, including:
Nominal pipe size (nominal inside diameter)
Wall thickness (wall thickness)
Gage
Grade
Manufacturing method (seamless or welded)
Batch number
Distributor name or symbol
Industries where Monel 400 pipe is used
Aerospace industry
Chemical industry
Energy industry
Food processing industry
Oil and gas industry
Petrochemical industry
Pulp and paper industry
Pharmaceutical industry
Power plant industry

Gnee Steel specializes in the production of various nickel-based alloys. Gnee Steel's product packaging includes steel strapping: Pipes with an outer diameter of 3 inches or less are typically strapped together with polypropylene film to prevent rust during sea transportation, and then secured with steel strapping. Wooden boxes/crates: Pipes are typically packaged in wooden boxes or crates to protect them during transportation, especially those that are longer or have larger diameters. Seaworthy export packaging: Suppliers typically use standard seaworthy export packaging methods, which may include a variety of materials and techniques to protect the pipes during transportation. Tarpaulin packaging: This prevents rain, seawater, and other external factors from penetrating the export wooden crates during transportation. Gnee Steel specializes in the production and sale of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power, automotive, and nuclear energy industries, and we can provide customized alloy material solutions based on customer needs. For alloy material pricing inquiries or customized alloy material solutions, please contact us for a quote at ss@gneesteel.com.





