Inconel Pipe and Tubing

Inconel pipe & tube - mill-direct, ASTM B444, cut-to-length, global export.

Our Inconel pipe and tubing are produced mill-direct - Inconel 600, 601, 625, 718 and X-750 - as seamless and welded pipe and tubing for corrosive, high-temperature and strength-critical service. Inconel keeps useful strength from cryogenic temperatures up to around 700 C, resists oxidation and scaling in air, and stands up to a wide range of acids, salts and combustion gases. 625 and X-750 add precipitation-hardening for higher strength; 600 and 601 lead on thermal stability and oxidation resistance. We produce Inconel pipe and tubing from about 6 mm up to 610 mm outside diameter, wall thickness 0.5-40 mm, in the annealed, with plain or bevelled ends; seamless and welded both supplied, with plain or bevelled ends and tolerances to specification. Seamless and welded both available from mill stock or made to order, each lot with EN 10204 3.1 mill test certificate and inspection on request. Below is the grade-by-grade specification overview, the industries we typically serve, and answers to common supply questions before you request a quote. For current 2026–2027 pricing across these grades, see our Inconel metal price analysis.

Products in this collection

Inconel 600 Pipe and Tube

Inconel 601 Pipe and Tube

Inconel 625 Pipe and Tube

Inconel 718 Pipe and Tube

Inconel X-750 Pipe and Tube

Specifications & Standards

Grade	UNS	Primary ASTM	Typical condition / size
Inconel 600	N06600	B167 / B517	Seamless/welded, 6-610 mm OD
Inconel 601	N06601	B167 / B517	Seamless/welded, 6-610 mm OD
Inconel 625	N06625	B444 / B704	Seamless/welded, 6-610 mm OD
Inconel 718	N07718	B444	Seamless/welded, 6-610 mm OD
Inconel X-750	N07750	B444	Seamless/welded, 6-610 mm OD

Standards above are the most common procurement specifications; equivalents such as AMS, EN or GB may be supplied on request. Confirm the exact standard and condition for your grade before ordering.

Applications

Inconel pipe and tubing move fluids and gases where corrosion, pressure or temperature defeat ordinary alloys:

Aerospace & gas turbines

combustor liners, ducting and heat shields (625, 718, X-750).

Heat treatment & furnaces

muffles, trays and radiant tubes (600, 601).

Chemical & petrochemical

reactor walls, scrubbers and acid-handling liners (625, 600).

Nuclear & thermal processing

baffles and support plates needing long-term thermal stability (600, 718).

Pulp & paper / pollution control

flue-gas and waste-incineration components (601, 625).

FAQ

Frequently Asked Questions

What outside diameter range can you supply for Inconel pipe and tubing?

Pipe and tubing from from about 6 mm up to 610 mm outside diameter, wall thickness 0.5-40 mm; both stock and custom sizes are available, cut to length.

What is the minimum order quantity?

Stock sizes from one piece; mill lengths or heavy plate are priced per project. Tell us the grade, size and quantity for a quote.

Do you provide MTC / EN 10204 3.1?

Yes - every lot ships with EN 10204 3.1 mill test certificate, and third-party inspection can be arranged.

What is the typical lead time?

Stock items ship within days; made-to-order material is typically a few weeks depending on size, condition and certification.

Can you supply non-standard sizes or conditions?

Yes - custom sizes, non-standard walls or special tempers are available on request; we also offer cutting and surface preparation.

How does 625 differ from 718 for this form?

625 is solid-solution strengthened and favoured for corrosion resistance; 718 is precipitation-hardened for higher strength at moderate temperature. Choose by whether corrosion or strength dominates your service.