Trusted Reformer Tube Manufacturer — HP40, HP-Nb & HP-Mod Centrifugal Cast Tubes

HP40 is the standard 25Cr-35Ni alloy used in steam methane reforming. HP-Nb adds approximately 1.5% niobium which precipitates as Nb-carbides during service — these stabilize the microstructure and improve creep-rupture life by 15-25% at temperatures above 950°C. HP-Nb is the preferred choice for severe-service reformers and high-throughput hydrogen plants. Cost premium is typically 8-15% over standard HP40.

14 meters single-piece for HP-Nb and HP-Mod grades on our horizontal centrifugal casting line. HP40 standard maximum is 12 meters. Longer assemblies are joined by tube-to-tube welding using matching alloy filler — we can perform the welding in-house or ship as separate pieces for site welding by your fabrication contractor.

Yes. Ultrasonic testing on 100% of tube volume is standard — not statistical sampling. Defects flagged before machining stage to avoid wasted secondary operations. UT reports issued per tube with serial number traceability. Additional NDT methods (radiography, dye penetrant) performed per buyer specification or PED requirement.

Yes. PED 2014/68/EU compliance documentation available for reformer tubes destined for EU pressure equipment service. Notified body involvement (TÜV, Lloyd's Register, DNV) coordinated through our PED engineering team. Module H1 or Module G certification path selected based on category and project requirements.

Solution annealing at 1,150°C followed by rapid cooling is standard. Hold time scaled to wall thickness (1 hour per 25 mm wall). Controlled atmosphere furnace prevents surface decarburization. Documented thermal profile (time-temperature curve) included with shipment. Aging treatment available on request for service-specific microstructure tuning.

Our HP-Nb tubes meet or exceed creep-rupture targets per API 530 and ECSC-NESC database. At 950°C wall temperature, 100,000-hour rupture stress is approximately 20 MPa for HP-Nb. We can provide actual creep-rupture test data on test heats for customers running tube-life prediction models.

Standard HP40 / HP-Nb reformer tubes: 35-55 days from confirmed PO to packed export crate. New mold tooling for non-standard OD: add 15-25 days. PED certification path: add 10-15 days for notified body coordination. Sea freight to US/EU: add 30-45 days. Total project lead time typically 90-120 days from PO to site delivery.

Yes. Reformer assemblies including catalyst tubes, pigtail connections (Alloy 800H, Incoloy), outlet headers, and inlet manifold connections can be supplied as a complete package. Welded assemblies tested as a unit before shipment. We coordinate alloy selection across the tube + pigtail + header assembly to match thermal expansion and service conditions.

There is no fixed piece-count MOQ. For new mold tooling (non-standard OD/ID), the project becomes economical at 12-20 tubes of the same geometry. Spare-parts orders of 1-5 tubes ship from our existing tooling library when geometry matches. Catalyst-charge replacement orders (typically 200-400 tubes) get production-line priority.

Yes. Active reformer tube shipments to refineries and hydrogen plants in the US, Canada, Germany, France, Italy, Russia, South Korea, Japan, India, Saudi Arabia, UAE, and Southeast Asia. FOB Qingdao standard quote; project-specific freight (sea, air, multi-modal) handled through partnered forwarders. Customs documentation for pressure equipment imports handled per destination country requirements.