400 600 750 Inconel Seamless Pipe And Tube For High Temperature And Corrosion Resistant Applications

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

Inconel seamless pipe from Changzhou DLX Alloy Co., Ltd. is manufactured through the pierce-and-pilger or extrusion process followed by cold drawing and precision heat treatment — delivering the pressure integrity, corrosion resistance, and dimensional accuracy required for high-pressure, high-temperature piping systems across chemical processing, offshore oil & gas, and power generation industries. We supply 7 Inconel grades in seamless pipe form to ASTM B167, B444, and B829 standards, with full EN 10204 3.1 MTC traceability and hydrostatic or NDT testing on every order.

Not sure which grade? Provide your operating temperature, pressure, and media — our technical team recommends the optimal grade and schedule within 24 hours.

Changzhou DLX Alloy Co., Ltd. was founded in 2002 with a single focus: nickel-based specialty alloys. We are not a general pipe distributor — our piercing, cold drawing, and heat treatment processes are designed around nickel alloy manufacturing.

• Seamless — pressure integrity without weld risk — Pierced from solid billet and cold drawn to final dimensions. No longitudinal weld seam means uniform mechanical properties around the circumference, no weld zone corrosion sensitivity, and full pressure rating with thinner wall than welded alternatives.
• Full heat-to-pipe traceability — Every pipe length traceable to original heat number with EN 10204 3.1 MTC included as standard. Multi-point quality chain from billet through finished pipe under ISO9001.
• Custom NPS and schedule to your design — Manufactured to your specified nominal pipe size and wall schedule rather than forcing standard stock sizes that compromise your piping design. Reduce weld fit-up issues and unnecessary wall thickness waste.
• Integrated production under one roof — Piercing, cold drawing, solution annealing, straightening, and NDT testing all in-house. No quality gaps from outsourced processing — consistent properties pipe to pipe, heat to heat.
• Hydrostatic or NDT tested as standard — Every pipe tested per your specification: hydrostatic pressure test, eddy current, ultrasonic, or radiographic. Test certificates included with your MTC documentation.
• Application-tested support — Our metallurgical team reviews your service conditions before recommending grade, wall schedule, and heat treatment state. Engineering partnership, not just pipe supply.

• 12,000 m² dedicated facility with integrated melting, piercing, cold drawing, solution annealing, straightening, and NDT testing — pipes produced under one roof from billet to finished product
• 1,200-ton annual capacity, with automated drawing lines improving throughput by ~25% over conventional equipment
• Custom pipe capability — manufactured to your specified NPS, schedule, and length rather than forcing standard mill stock sizes
• Five product forms — bar, strip, tube, plate, and wire — integrated supply for customers sourcing multiple product types from a single qualified vendor
• 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 values are for age-hardened condition. Solution-annealed values available on request.

Third-party inspection by SGS, BV, or TÜV available upon request.

Tube is specified by exact outside diameter and wall thickness — common in heat exchangers and instrumentation. Pipe is specified by nominal pipe size (NPS) and wall schedule — common in process piping systems. DLX manufactures both. Specify NPS and schedule for pipe; OD and wall thickness for tube.

Yes. DLX specializes in custom pipe production. Submit your required NPS, wall schedule (or minimum wall thickness), length, and grade — we manufacture to your specification.

Yes. Hydrostatic testing per ASTM B829 or your specified test pressure is available as standard. Third-party witnessed hydrotesting by SGS, BV, or TÜV can be arranged.

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

Yes. Beveled end preparation to your specified angle is available. Standard 30° or 37.5° bevel per ASME B16.25 — or custom angle per your welding procedure specification.