High Temperature Boiler Reheater Vertical Reheat Steam Reheater Panel

High-Temperature Reheater Panel for Final Reheat Steam Temperature with Vertical Hanging Design

The High-Temperature Reheater Panel is the final-stage reheat steam heating component fabricated by Boyu Heavy Industry, designed to deliver reheat steam at the highest temperature in the reheat cycle. As an ASME S/U certified boiler component manufacturer with integrated tube, header and support fabrication capabilities, Boyu produces high-temperature reheater panels that combine alloy steel tube bundles, distribution headers and structural supports into a ready-to-install system. This panel serves the primary function of raising intermediate reheat steam to its final design temperature (typically 540-571C), which is critical for maximizing low-pressure turbine efficiency and reducing moisture erosion in the final turbine stages.

The High-Temperature Reheater Panel is specifically constructed with high-temperature alloy steel tubes (12Cr1MoVG/SA-213 T11/T22 for 520-565C, T91/SA-213 T91 for up to 593C) arranged in vertical hanging panel configurations, connected to thick-wall alloy steel headers (SA-335 P11/P22/P91) via full-penetration tube-to-header welds. Boyu fabricates panels with CNC precision bending (ovality <8%) and headers with CNC deep-hole drilling to +/-0.5mm tolerance. The vertical hanging design allows free downward thermal expansion. Reheat steam pressure is 1.2-3.8MPa, which is lower than superheater pressure, enabling thinner tube walls (4-6mm) while the high steam temperature (up to 571C) requires alloy steel with excellent creep resistance.

Manufactured using certified alloy steel tubes and headers with CNC bending, deep-hole drilling, robotic welding, post-weld heat treatment and comprehensive NDT, every High-Temperature Reheater Panel undergoes 100% UT for header body and welds, RT for tube-to-header joints, bend inspection, dimensional verification and 1.5x design pressure hydraulic test. The ASME S/U certified fabrication ensures compliance with international standards. Boyu's integrated facility enables complete panel fabrication under one quality system. Typical delivery is 35-50 days. Full documentation including MTC, WPS/PQR, PWHT reports and NDT records accompanies every shipment.

One significant advantage of Boyu High-Temperature Reheater Panels is the systematic material selection for the high-temperature, lower-pressure reheat service. Reheaters operate at lower pressure (1.2-3.8MPa) but high temperature (up to 571C), requiring materials with excellent creep and oxidation resistance but allowing thinner walls than equivalent superheaters. Boyu selects 12Cr1MoVG for standard 540C service and T91 for advanced 565-571C service, ensuring appropriate material for each design condition. Additionally, the vertical hanging design with free downward thermal expansion minimizes thermal stress, a critical factor for long-term reliability in high-temperature components.

The High-Temperature Reheater Panel is adaptable to various utility and large industrial boiler types, making it suitable for power generation, coking waste heat and large industrial steam applications. Its versatility enables fabrication for boiler capacities from 220t/h to 2000t/h and above, with reheat steam parameters from 2.4MPa/480C inlet to 3.8MPa/571C outlet. Furthermore, panels can be customized for specific tube configurations, header sizes, support designs and material grades, ensuring optimal performance for each boiler's final reheat requirements.

In addition to functional benefits, the High-Temperature Reheater Panel is designed with safety and long-term reliability in mind. All pressure-bearing components comply with ASME BPVC Section I and GB/T 16507 standards, with mandatory NDT and pressure testing. Boyu provides technical support for thermal design, material grade selection, creep life assessment, failure analysis and maintenance planning, helping clients achieve optimal final reheater performance and service life. Proper high-temperature reheater design ensures stable final reheat steam temperature across load variations.

To summarize, the Boyu High-Temperature Reheater Panel represents a complete, integrated final-stage reheat heating solution leveraging our ASME S/U alloy steel fabrication expertise. By delivering pressure-tested, NDT-verified panels with proper thermal expansion management, it ensures reliable final reheat steam temperature delivery, optimal turbine efficiency and long service life. Our integrated manufacturing capability, rigorous quality control and expert technical support make this product an ideal choice for large boiler manufacturers and EPC contractors.

Features

·        Vertical hanging design, free downward thermal expansion

·        High-temp alloy: 12Cr1MoVG(T11/T22) 520-565C / T91 up to 593C

·        Reheat pressure 1.2-3.8MPa, thinner walls (4-6mm) vs superheater

·        Header: SA-335 P11/P22/P91, CNC deep-hole drilling +/-0.5mm

·        100% UT headers + RT tube-to-header joints + 1.5x hydraulic test

·        Robotic full-penetration welding, mandatory PWHT for alloy steel

·        Steam: 2.4MPa/480C inlet to 3.8MPa/571C outlet

·        Suitable for 220t/h to 2000t/h+ utility boilers

·        Delivery: 35-50 days, full documentation with traceability

·        Expert support for creep life assessment and material grade selection

Technical Parameters

Applications

The Boyu High-Temperature Reheater Panel is the final-stage reheat steam heating component for utility and large industrial boilers. Manufactured in Shandong, China under ASME S/U certification with vertical hanging design, this panel delivers reheat steam at final design temperature. Certified with ISO9001, ASME S/U, Grade A, SGS and IBR, the product guarantees high quality and reliable high-temperature reheat performance.

This High-Temperature Reheater Panel is widely used in large utility boilers, coking waste heat boilers and large industrial boilers with reheat cycles. Its high-temperature alloy steel construction and vertical hanging design ensure reliable performance at the highest reheat steam temperatures, up to 571C.