Inconel Alloy Tube — 600, 625, 690 for Heat Exchanger & Furnace

ISO9001 & SGS Certified | Est. 2002 | 12,000 m² Factory | Custom Dimensions | 3–7 Day Stock Dispatch

Inconel alloy tubes from Changzhou DLX Alloy Co., Ltd. serve the most demanding high-temperature and corrosive environments across oil & gas, chemical processing, power generation, aerospace, and nuclear industries. We supply 7 Inconel grades in seamless and welded tube forms, produced through integrated piercing, cold drawing, and precision heat treatment — with full EN 10204 3.1 MTC traceability on every order.

Select by application or base material requirement:

Need help selecting the right grade? Provide your operating temperature, media, and pressure range — our technical team responds with a recommendation within 24 hours.

• Made to your dimensions — Tubes supplied as custom-made to your OD, wall thickness, and length specifications. No forcing standard sizes that don't match your design.
• Full heat-to-tube traceability — Every tube traceable to original heat number with EN 10204 3.1 MTC included as standard. Incoming billet inspection through outbound final review under ISO9001.
• Controlled microstructure — Precision cold drawing followed by optimized solution annealing and controlled-atmosphere heat treatment (±1°C) ensures uniform grain structure, consistent mechanical properties, and surface free of oxidation scale.
• Integrated production, not trading — In-house piercing, cold drawing, annealing, straightening, and NDT testing under one roof means no quality gaps from outsourced processing steps.
• Multi-grade expertise — Instead of stocking one or two common grades, DLX manufactures across 7 Inconel variations. Your project gets the right alloy — not the one we happen to carry.
• Application-tested support — Our metallurgical team reviews your service conditions (temperature, pressure, media) before recommending tube grade, wall thickness, and heat treatment state. Not just order-taking — engineering partnership.

Changzhou DLX Alloy Co., Ltd. was founded in 2016 with a single focus: nickel-based specialty alloys. We are not a general metal distributor — every piece of equipment, process parameter, and quality checkpoint is designed around nickel alloy manufacturing.

• 12,000 m² dedicated facility with integrated melting, piercing, forging, cold drawing, heat treatment, and NDT testing capabilities — tubes are produced under one roof, not assembled from multiple subcontractors
• 1,200-ton annual capacity, with automated rolling and drawing lines that improve throughput by ~25% over conventional equipment
• Custom tube capability — unlike mills that offer only stock sizes, DLX produces to customer-specified OD, wall thickness, and length
• Five product forms — bar, strip, tube, plate, and wire — enabling integrated supply for customers sourcing multiple product types
• ISO9001 quality management with multi-point traceability; SGS-accredited with BV and TÜV third-party inspection available

Source: DLX Alloy product catalog. EN 10204 3.1 MTC with full composition included on every shipment.

Note: Inconel 718 and X750 properties are for age-hardened condition. Solution-annealed values available on request.

Every Inconel tube order from DLX undergoes:

Third-party inspection by SGS, BV, or TÜV available upon request. All shipments fully documented and traceable.

Yes. DLX specializes in custom tube production rather than off-the-shelf standard sizes. Submit your OD, wall thickness, length, and grade — we manufacture to your specification.

Yes. Third-party NDT and material verification by SGS, BV, or TÜV can be arranged. We also provide in-house PMI, UT, eddy current, and hydrostatic test reports as standard documentation.

MOQ is negotiated per grade and specification. We support trial quantities for first-time buyers to validate quality before committing to project volumes.

Yes. Both solution-annealed and age-hardened (precipitation-hardened) conditions are available for Inconel 718 and X750. Specify your required heat treatment condition and mechanical property targets when ordering.

Every tube is dimensionally checked, NDT-tested, and documented before shipment. In the rare event of non-conformance, we review your inspection report against our MTC and resolve through replacement or credit — our ISO9001 system requires root cause analysis and corrective action on every claim.