Superalloy Seamless Tube

Each tube is hot-extruded from solid billet in a single pass — no weld seam, no rework, consistent grain structure throughout — available in OD 6–89 mm, wall thickness 3–9 mm, lengths 3 000–10 000 mm. Inconel 718, the classic precipitation-hardenable superalloy, retains tensile strength above 1 000 MPa at 700 °C; N06625 serves well up to about 650 °C under stress; C276 and HC-22 are optimized for corrosion resistance and perform best below 500 °C. Gas turbine hot sections, petrochemical cracking furnaces at 800–1 100 °C, nuclear heat exchangers, aerospace engine ducting, and downhole oil-and-gas tools exposed to H₂S and CO₂ at elevated pressure — these are the applications where replacement cycles must stretch into years, not months, and where a seamless extruded tube from a factory-direct China manufacturer is the only economically rational choice. ISO 9001 plus four additional industry certifications govern every shipment from Ji lai da. EN 10204 3.1 MTC with full heat traceability is standard. FOB, CIF, and DDP delivery worldwide. Submit an RFQ specifying grade, dimensions, heat-treatment condition, and destination port to Jiangsu Ji Lai Da Nickel-Based Alloy Co., Ltd. for a factory-direct quotation and proforma invoice within one business day.

Operating Environments

Gas turbine hot sections and combustion liners. Petrochemical cracking furnaces running at 800–1100 °C. Nuclear heat exchangers. Aerospace engine ducting. Downhole oil and gas tools exposed to H₂S and CO₂ at elevated pressure. The superalloy seamless tube is chosen when replacement cycles must stretch into years, not months. Ji lai da extrudes each tube from solid billet in a single pass — no weld seam, no rework, consistent grain structure throughout. ISO 9001 + 4 additional certifications. Factory-direct from China, FOB / CIF / DDP.

Product Parameter

FAQ

Q1: What defines a 'superalloy' vs a standard nickel alloy?

A: Superalloys maintain most of their mechanical strength at temperatures above 600 °C through precipitation hardening or solid-solution strengthening. Standard nickel alloys like C276 excel in corrosion but lose strength faster as temperature climbs. Inconel 718 is the classic superalloy — age-hardenable, retaining >1000 MPa tensile strength at 700 °C.

Q2: Can you supply heat-treated tubes?

A: Yes. Inconel 718 requires precipitation hardening (solution + aging) to reach full strength. We can deliver in solution-annealed or fully heat-treated condition per your specification. Other grades are typically supplied in the annealed state.

Q3: What's the maximum service temperature?

A: Depends on the grade and load. Inconel 718: ~700 °C under stress, ~1000 °C in low-stress oxidation service. N06625: ~650 °C under stress. C276 and HC-22 are optimized for corrosion, not high-temperature strength — they serve best below 500 °C. We'll help you pick the right alloy for your temperature and corrosion profile.

Q4: Why hot extrusion for superalloys?

A: Superalloys are among the hardest metals to form — they resist deformation even at elevated temperatures. Hot extrusion applies uniform pressure through a die in one stroke, avoiding the repeated cold-work + anneal cycles that cold drawing requires. Higher yield, lower cost per meter, better grain structure.

Q5: How do I place an order?

A: Specify grade, dimensions, quantity, heat-treatment condition, and destination port. We return a proforma invoice within one business day. MTC per EN 10204 included.