Monel 400 K400 U tubes , Monel 400 K400 U Tube Manufacturer, Monel 400 K400 U Tube Supplier, Monel 400 K400 U Tube Exporter, Monel 400 K400 Precision Tubing, Monel 400 K400 Small Diameter Tube , Monel 400 K400 U Tubes
Monel 400 U-tubes from Sumer Metal Industries Private Limited are produced for demanding corrosive and high-temperature applications where strength and resistance to seawater and many chemicals are required. Manufactured using controlled melting and hot-working processes, these U-shaped heat-exchanger tubes are drawn and annealed to meet consistent metallurgical quality. Sumer Metal Industries positions itself as a manufacturer, supplier and exporter focused on industrial customers — boilers, petrochemical heat exchangers, marine condensers, desalination plants and chemical processing — providing both standard and customized U-tube bundles.
Sumer Metal Industries exports Monel 400 U-tubes across the Middle East and globally — with regular shipments to Oman, Qatar, Saudi Arabia, the UAE, Kuwait, as well as to Spain, Germany, the USA, Canada and numerous countries across Africa. The company supports export logistics, international quality documentation (mill test certificates), and packaging to withstand long transit. They emphasize traceability (heat numbers), batch testing, and adherence to export regulations so customers in these markets receive tubes ready for installation and inspection.
The key selling points of Monel 400 U-tubes from Sumer Metal are corrosion resistance to seawater, good strength over a wide temperature range, and excellent resistance to hydrofluoric and hydrochloric acids at particular concentrations. Monel 400 is also non-magnetic in the annealed condition and weldable by conventional methods, which makes U-tube fabrication, welding into tube sheets and on-site repairs practical. Sumer Metal highlights surface finish options, custom bending radii for U-shapes, and post-fabrication testing (eddy current, dimensional inspection) as value adds.
Quality and specification control at Sumer Metal Industries includes dimensional verification, hardness checks and chemical analysis by OES (optical emission spectroscopy) or PMI on request. They supply Monel 400 U-tubes to meet common international specifications and can furnish mill test certificates (EN 10204 3.1 or equivalent) and third-party inspection where required by purchase order. Typical finishes include pickled and passivated or mechanically polished, based on client needs and service environment.
Specification of Monel 400 K400 U tubes
| Specification Item | Details |
|---|---|
| Alloy / Trade Name | Monel 400 (K400) |
| UNS / Material No. | UNS N04400 |
| Product Form | U-tubes (mandrel/cold bent), annealed |
| Typical Standards | ASTM/ASME equivalents (customer to specify: e.g., ASTM B166 for Ni-Cu tubing; confirm spec at PO) |
| Outside Diameter (OD) | Common: 12.7 mm (½") to 38.1 mm (1½") — custom sizes available |
| Wall Thickness (WT) | Typical: 1.2 mm to 4.0 mm (depending on OD and application) |
| U-bend Centre-to-Centre | As per drawing: standard examples 50 / 100 / 150 / 200 mm; custom radii on request |
| Heat Treatment | Annealed (typical). Additional treatments by request |
| Surface Finish | Pickled & passivated / mechanically polished / as fabricated |
| Documentation | Mill Test Certificate (MTC) EN 10204 3.1 or equivalent; inspection reports on request |
| NDT & Testing | Eddy current testing, dimensional check, hardness test; PMI or OES chemical verification on request |
| Packing for Export | Seaworthy wooden crates / bundles with corrosion protection, labeling and heat numbers |
| Typical Applications | Marine condensers, heat exchangers, desalination, chemical processing, petrochemical |
| Equivalent / Notes | Commonly referenced as Ni-Cu alloy (Ni ~63%, Cu ~28–34%). Always specify UNS N04400 for procurement. |
From an application standpoint, Monel 400 U-tubes are favored in marine heat exchangers, condensers, chemical heat recovery systems and some high-pressure steam systems. Their combination of nickel-copper alloying delivers reliable performance where chloride stress-corrosion cracking of stainless steels is a concern and where both strength and moderate fabricability are required. Sumer Metal’s engineering support helps customers choose wall thickness, bend radii and end preparations (beveled, plain, threaded adapters) to match exchanger designs and performance requirements.
Chemical Composition of Monel 400 K400 U tubes
| Element | Typical Range (wt%) |
|---|---|
| Nickel (Ni) | ~63.0 – 67.0 |
| Copper (Cu) | ~28.0 – 34.0 |
| Iron (Fe) | ≤ 2.5 |
| Manganese (Mn) | ≤ 2.0 |
| Carbon (C) | ≤ 0.30 |
| Silicon (Si) | ≤ 0.50 |
| Sulfur (S) | ≤ 0.024 |
In summary, Monel 400 / K400 U tubes combine the critical qualities of high strength, corrosion resistance, and reliability in a single material. Their robust performance in harsh environments, along with adherence to international quality standards, makes them a trusted choice for U and control applications worldwide. Whether used in upstream oil operations or chemical manufacturing plants, these tubes ensure long-term service with minimal maintenance and high operational efficiency.
Specification of Monel 400 K400 U tubes
| Specification Item | Details |
|---|---|
| Alloy / Trade Name | Monel 400 (K400) |
| UNS / Material No. | UNS N04400 |
| Product Form | U-tubes (mandrel/cold bent), annealed |
| Typical Standards | ASTM/ASME equivalents (customer to specify: e.g., ASTM B166 for Ni-Cu tubing; confirm spec at PO) |
| Outside Diameter (OD) | Common: 12.7 mm (½") to 38.1 mm (1½") — custom sizes available |
| Wall Thickness (WT) | Typical: 1.2 mm to 4.0 mm (depending on OD and application) |
| U-bend Centre-to-Centre | As per drawing: standard examples 50 / 100 / 150 / 200 mm; custom radii on request |
| Heat Treatment | Annealed (typical). Additional treatments by request |
| Surface Finish | Pickled & passivated / mechanically polished / as fabricated |
| Documentation | Mill Test Certificate (MTC) EN 10204 3.1 or equivalent; inspection reports on request |
| NDT & Testing | Eddy current testing, dimensional check, hardness test; PMI or OES chemical verification on request |
| Packing for Export | Seaworthy wooden crates / bundles with corrosion protection, labeling and heat numbers |
| Typical Applications | Marine condensers, heat exchangers, desalination, chemical processing, petrochemical |
| Equivalent / Notes | Commonly referenced as Ni-Cu alloy (Ni ~63%, Cu ~28–34%). Always specify UNS N04400 for procurement. |
🏭 Industry & Application
- ✅ Monel 400 K400 U tubes for Medical Industry
- ✅ Monel 400 K400 U tubes for Chemical Processing
- ✅ Monel 400 K400 U tubes for U Lines
- ✅ Monel 400 K400 U tubes for Gas & Liquid Flow
- ✅ Monel 400 K400 U tubes for Heat Exchangers
❓ Frequently Asked Questions (FAQs)
Q1:What are Monel 400 and Monel K500 U Tubes?
Monel 400 and Monel K500 U Tubes are nickel-copper alloy U-bent tubes widely used in heat exchangers, condensers, and marine applications. Monel 400 offers excellent corrosion resistance, while Monel K500 provides higher strength and hardness due to age-hardening.
Q2:What is the difference between Monel 400 and Monel K500 U Tubes?
Monel 400 U Tubes: Known for superior corrosion resistance in seawater, acids, and alkaline environments. Monel K500 U Tubes: Combines the corrosion resistance of Monel 400 with added mechanical strength and hardness, making it suitable for high-stress applications.
Q3:In which industries are these U Tubes used?
They are commonly used in marine engineering, chemical processing, power generation, oil & gas, heat exchangers, and offshore applications where resistance to seawater, acids, and stress-corrosion cracking is critical.
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At Sumer Metal Industries Pvt. Ltd., we follow a zero-defect policy by implementing stringent quality checks, using certified raw materials, and continuously improving our processes to deliver reliable and consistent tubing solutions
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