Monel 400 Pipes & Tubes
ASTM B165 / B725, UNS N04400, DIN 2.4360.
ASTM B165 / B725, UNS N04400, DIN 2.4360.

Jayesh Metal Machines offers Monel 400 pipe and Monel 400 tube in seamless and welded forms, made from UNS N04400 nickel-copper alloy. The material holds up well in seawater and non-oxidizing acid environments, which is why marine and chemical plants keep specifying it. Production follows ASTM B165 and ASTM B725, spanning wall thickness from schedule 5 through schedule 160, with matching Monel 400 flanges stocked alongside.
As compared to the steel, Monel is the little bit harder to the machine as it is working hardening faster. It is to be turned and worked at the slower speed and lower feed rates. Also, the Monel alloy 400 pipes are offered in custom-made wall thickness and sizes as per the requirements are given by the esteem patrons in national and international product quality standards.
The dimensions of it are ASTM, ASME, and API. The specification of it is ASTM / ASME SB 163 / 165. The grade name is Monel 400 UNS No N04400. It is ranging from 6.35mm OD to 245 mm OD in wall thickness of 0.6mm to 20mm. The size of it is ranging from 15” NB to 150” NB IN. The types of it are seamless, fabricated, welded, CDW, ERW etc. The forms of it are rectangular, hydraulic, round and square etc. The length of it is double random, single random, cut length. The ends are the beveled end, plain end, and threaded end.
Just specify all about your specification requirements and buy Monel 400 pipes at affordable rates.
Specifications : ASTM B165, B725, B730 / ASME SB165, SB725, SB730
Standard :ASTM, ASME and API
Size : 15mm NB to 150mm NB (1/2" to 6"), 7″ (193.7mm OD to 20″ 508mm OD)
Type : Seamless / ERW / Welded / Fabricated
Length : Single Random, Double Random & Required Length, Cut Length or As per customer's requirement
Outer Diameter : 1.250″ – 6.000″ (30-150mm)
Wall Range : 0.095″ – 1.000″ (.2.5-25mm)
Outer Diameter : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
| STANDARD | WERKSTOFF NR. | UNS | JIS | AFNOR | BS | GOST | EN |
| Monel 400 | 2.4360 | N04400 | NW 4400 | NU-30M | NA 13 | МНЖМц 28-2,5-1,5 | NiCu30Fe |
| 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 |
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 35000 , MPa – 240 | 40 % |
Alloy 400 Seamless Pipe
Monel 400 Seamless Pipes
ASTM B165 Monel 400 Seamless Pipe
ASME SB165 Monel® Alloy 400 Seamless Pipes
UNS N04400 Seamless Pipe
UNS N04400 Seamless Pipes
DIN 2.4360 Seamless Pipe
WERKSTOFF NR.2.4360 Seamless Pipes
Monel 400 Seamless Tube
Alloy 400 Seamless Tubes
ASTM B725 Monel 400 Seamless Tubing
ASME SB725 Monel 400 Seamless Tubes
UNS N04400 Monel Seamless Tubing
UNS N04400 Monel Seamless Tubes
DIN 2.4360 Seamless Tube
WERKSTOFF NR.2.4360 Seamless Tubing
Monel 400 Welded Pipes
Alloy 400 Welding Pipe
ASTM B165 Monel 400 Welded Piping
ASME SB165 Monel 400 Welded Pipe
UNS N04400 Welded Pipes
UNS N04400 Welded Pipe
DIN 2.4360 Welded Piping
WERKSTOFF NR.2.4360 Welded Pipes
Monel 400 Welded Tubes
Nickel Alloy 400 Welded Tubing
ASTM B165 Monel 400 Welded Tubes
ASME SB165 Monel 400 Welded Tube
UNS N04400 Welding Tubes
UNS N04400 Welded Tube
DIN 2.4360 Welded Tubes
WERKSTOFF NR.2.4360 Welded Tubing
Monel 400 EFW Pipes
Monel 400 EFW Pipe
ASTM B165 Monel 400 EFW Pipes
ASME SB165 Monel 400 EFW Pipe
UNS N04400 Electric Fusion Welded Pipes
UNS N04400 EFW Pipes
DIN 2.4360 Electric Fusion Welded Pipes
WERKSTOFF NR.2.4360 EFW Piping
Monel 400 ERW Pipes
Alloy 400 Electric Resistance Welded Pipes
ASTM B165 Monel 400 ERW Pipes
ASME SB165 Monel 400 ERW Pipes
UNS N04400 Electric Resistance Welded Pipes
UNS N04400 ERW Pipes
DIN 2.4360 Electric Resistance Welded Pipes
WERKSTOFF NR.2.4360 ERW Pipes
Monel 400 ERW Tubes
Monel® Alloy 400 ERW Tubing
ASTM B725 Monel 400 Electric Resistance Welded Tubes
ASME SB725 Monel 400 ERW Tubes
UNS N04400 Electric Resistance Welded Tube
UNS N04400 ERW Tubing
DIN 2.4360 Electric Resistance Welded Tube
WERKSTOFF NR.2.4360 ERW Tubes
Monel 400 is available in several forms, alongside related nickel alloy pipes in stock.
Monel 400 seamless pipe is cold-worked from solid billet with no weld seam, sized to ASTM B165 and ASME SB165 with uniform wall thickness.
A Monel 400 seamless tube is used for smaller diameters in heat exchangers and instrumentation lines, meeting ASTM B163 with tight tolerances and a smooth bore.
Monel 400 welded pipe is formed and welded longitudinally from plate, finished to ASTM B725, and costs less than seamless pipe in larger diameters.
Monel 400 welded tube follows a similar route for smaller sizes, mostly for heat transfer lines, with thinner walls and sizing to ASTM B730.
Monel 400 ERW pipe and tube uses electric resistance welding for round and shaped sections, supplied in square and rectangular profiles on request.
Monel 400 pipes are used extensively in marine engineering applications, including pump and propeller shafts, seawater piping, and Monel 400 fasteners that are subjected to salt spray. Chemical and hydrocarbon plants rely on it for process vessels, crude stills, and piping carrying deaerated acid. Valves, pumps, fittings, and heat exchangers round out the common uses, since corrosion resistance outweighs cost here.
Every batch goes through dimensional checks against ASTM B165 tolerances before dispatch. Jayesh Metal verifies chemical composition through spectroanalysis and confirms mechanical properties with tensile testing. Visual inspection catches pitting or lamination defects early, and mill test certificates accompany each consignment.
Jayesh Metal is a Monel 400 pipes manufacturer and stockist, holding seamless and welded sizes ready for cut-to-length orders. As one of the working Monel 400 pipe suppliers in the segment, dispatch runs from stock, with custom sizes drawn against confirmed drawings. Contact Jayesh Metal for a quote on size, schedule, and quantity.
Monel 400 pipe is made from MONEL alloy 400, a nickel-copper alloy identified as UNS N04400, distinct from Monel K500, which adds aluminum and titanium for higher strength.
The pipe is specified by nominal bore and schedule according to ASTM B165 and B725. The tube is specified by the actual outside diameter and wall thickness under ASTM B163.
Yes. Jayesh Metal supplies Monel 400 seamless pipe to ASTM B165 and ASME SB165 across standard schedules.
Seamless pipe and tube follow ASTM B165, welded pipe follows ASTM B725, and welded tube follows ASTM B730, depending on the product form ordered.
UNS N04400. This is the correct designation and should not be confused with N04404, a code sometimes seen in error.
Monel 400 pipes are used in marine engineering, chemical and hydrocarbon processing, valves, pumps, fittings, and heat exchangers, mainly in seawater and deaerated acid service.
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