Amigo Impex is an Incoloy Pipes & Tubes manufacturer, supplier and exporter out of Mumbai, trading since 2013. We stock nickel-iron-chromium alloy pipe and tube in two grades: Incoloy 800HT (UNS N08811) and Incoloy 825 (UNS N08825).
Chromium and nickel give Incoloy 800HT its oxidation resistance, while controlled carbon, combined aluminium and titanium, and a coarse annealed grain size give it creep strength, making it suitable for furnace, reformer and other elevated-temperature applications. In Alloy 825, molybdenum with copper gives that grade its resistance to sulphuric and phosphoric acid, while its high nickel content resists chloride stress-corrosion cracking. The seamless product is certified to ASTM B407 / ASME SB-407 and ASTM B423 / ASME SB-423, while welded pipe and tube follow B515, B705 and B704.
Pipe covers 15 NB to 150 NB across schedules SCH 5S to XXS. The tube spans 6 mm to 254 mm in outside diameter in walls of 0.2 mm to 20 mm. Cutting, machining, threading, fabrication, testing and packing are handled in-house, so cut lengths and bevelled ends leave with the same consignment. We hold ISO 9001:2018, ISO 45001:2018, AS 9120B, and PED certificates.
This table sets grades, dimensions, lengths and end preparation; the second maps each ASTM specification and its ASME counterpart against the product form and grade it governs.
The construction route decides the governing document, so the specification quoted on an order changes with seamless, welded or exchanger-tube supply.
| Standard | Product Form Covered | Grades |
|---|---|---|
| ASTM B407 / ASME SB-407 | Seamless pipe and tube | 800HT |
| ASTM B515 | Welded tube | 800HT |
| ASTM B423 / ASME SB-423 | Seamless pipe and tube | 825 |
| ASTM B705 | Welded pipe | 825 |
| ASTM B704 | Welded tube | 825 |
| ASTM B163 / ASME SB-163 | Seamless condenser and heat exchanger tube | 800 series, 825 |
Grade selection between Incoloy 800HT and Incoloy 825 depends primarily on service temperature and corrosion environment. 800HT is selected for elevated-temperature strength and creep resistance, while 825 is suited to corrosive environments involving acids and chlorides.
Aluminium plus titanium controlled to 0.85 to 1.20% takes 800HT into reformer and furnace tubing, where the design code calls for guaranteed creep-rupture values.
Molybdenum with copper makes UNS N08825 the wet-corrosion grade. It holds off sulphuric and phosphoric acid, pitting, crevice attack and chloride stress-corrosion cracking at moderate temperatures.
Nominal bore and schedule size the Incoloy pipe; outside diameter and wall size the tube. Both systems appear below alongside the lengths and end preparations cut in our own works. Sizes beyond the table are quoted on request.
| Dimension | Range |
|---|---|
| Pipe Nominal Bore | 15 NB to 150 NB |
| Pipe Schedule | SCH 5S, 10S, 40S, 80S (ASME B36.19M); SCH 10, 40, STD, 80, XS, 160, XXS (ASME B36.10M); SCH 120 in 100 NB and 150 NB only |
| Tube Outside Diameter | 6 mm to 254 mm |
| Tube Wall Thickness | 0.2 mm to 20 mm |
| Length | Single random, double random and cut length, up to 18 m |
| End Preparation | Plain, bevelled, threaded |
Each figure below is a theoretical kg/m value, derived as (OD minus wall) multiplied by wall, by pi, by density, divided by 1000. Density is taken as 7.94 g/cm³ for the 800 series and 8.14 g/cm³ for Alloy 825.
| Tube OD (mm) | Wall (mm) | 800 Series (kg/m) | Alloy 825 (kg/m) |
|---|---|---|---|
| 6 | 1.0 | 0.125 | 0.128 |
| 12 | 1.5 | 0.393 | 0.403 |
| 25 | 2.0 | 1.147 | 1.176 |
| 50 | 3.0 | 3.517 | 3.606 |
| 100 | 4.0 | 9.579 | 9.820 |
| 168 | 5.0 | 20.330 | 20.842 |
| 254 | 6.0 | 37.117 | 38.052 |
A single working pressure doesn't cover the range. Allowable pressure on a nickel-iron-chromium line follows grade, wall thickness, schedule and metal temperature, and it is read from the code documents below rather than from any published psi figure.
| Rating Input | Governing Document |
|---|---|
| Wall thickness against schedule | ASME B36.10M and ASME B36.19M |
| Maximum allowable stress by grade and temperature | ASME BPVC Section II, Part D |
| Design pressure, process piping | ASME B31.3 |
| Design pressure, power piping | ASME B31.1 |
| Hydrostatic and non-destructive test requirements | The governing ASTM product specification |
Seamless and welded manufacturing routes yield the pipe and tube constructions listed below, available in Incoloy 800HT and Incoloy 825. The exchanger, condenser and boiler tubes are ordered against ASTM B163 / ASME SB-163.
Tube bundles are strapped with end caps fitted, and longer Incoloy pipes travel in wooden crates stencilled with heat number, grade and size. Export lots are packed for sea freight and move from Mumbai to the USA, the Gulf, Europe and Asia; domestic supply reaches pan-India. An urgent lot can leave in one to two days, while made-to-order material runs to about 30 days.
A mill test certificate accompanies every order of Incoloy pipe and tube, combining the original mill record with results from our own laboratory. Hydrostatic or non-destructive electric testing, tensile checks and chemical verification follow the governing ASTM specification. We accept third-party inspection at the works, and the certifications we hold are AS 9120B, PED, ISO 9001:2015 and ISO 45001:2018.
Send your specification to Amigo Impex, your Incoloy pipe supplier, for a current rate on Incoloy 800HT or Incoloy 825 pipe and tube.
Request a Quote60–70 tonnes held in Mumbai, with urgent requirements dispatched within one to two days.
AS 9120B, PED, ISO 9001:2015 and ISO 45001:2018, with an MTC on every order.
Cutting, machining, threading, fabrication and testing all handled at our own Mumbai facility.
Original mill certificates plus our own test reports, so every batch can be traced back.
Non-standard sizes and specifications made to order.
Dispatched from Mumbai to every major Indian city, and exported to USA, Gulf, Europe, Asia
Iron content is the difference. Incoloy pipe is a nickel-iron-chromium alloy carrying iron as a deliberate major element; Inconel pipe runs on far higher nickel and answers more severe corrosive service.
Specify Incoloy 800HT for applications where sustained high-temperature strength and creep resistance are the primary requirements, and Incoloy 825 for applications where resistance to acids, chlorides, and stress-corrosion cracking is the primary requirement.
ASTM B407 / ASME SB-407 covers seamless 800 series pipe and tube, ASTM B423 / ASME SB-423 covers seamless Alloy 825, and welded material follows B515, B705 and B704.
Yes, we supply both routes. Seamless suits high-pressure and critical service, while welded (EFW) construction cuts cost and lead time.
Heat resistance from the 800 series and acid resistance from Alloy 825 put these tubulars into 8 industries:
