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Radiant Coil(Tube)

Radiant Coil(Tube)

Overview

Radiant Coils (Tubes) are critical components directly responsible for pyrolysis and reaction processes within the radiant sections of Ethylene Crackers, Steam Reformers, and SM Heaters — the core units of petrochemical and refining plants.

As these components are continuously exposed to extreme conditions exceeding 1,000°C, including high internal process pressure, carburization, and oxidation, product performance and service life are determined by both the material’s resistance to oxidation, carburization, and creep, as well as the microstructural uniformity and dimensional precision achieved through the centrifugal casting process.

Based on 36 years of accumulated field experience and deep process understanding in refractory design and installation for petrochemical and refining plants, Insulation Korea supplies high-quality Radiant Coil (Tube) solutions through a strategic partnership with the global leading coil manufacturer YANTAI MANOIR (Yantai Manoir Heat Resistant Alloys Co., Ltd.).

As the only specialized company with expertise in both refractory linings and radiant coils (tubes), Insulation Korea provides one-stop solutions covering the entire lifecycle of customer facilities — from optimal material selection consulting to customized material and design recommendations tailored to specific operating conditions.

Classification

① Ethylene Cracker (NCC/ECC)

   Product range applied to facilities that produce ethylene and propylene through high-temperature cracking of naphtha or ethane.

   • U-Tube / US-Tube (High-Performance Cracking Tubes)

   • Inlet Assembly of Radiant Tube Coils

   • 4-in-1 Fitting (High-Temperature Gas Merging Connection)

   • Serpentine Furnace Tube Assembly

   • 90° Elbows with Lugs

   • Y-Shaped Assemblies (Gas Distribution & Merging Piping)

 

② Steam Methane Reformer (SMR)

   Product range applied to facilities that produce hydrogen and synthesis gas through the reaction of natural gas and steam.

   • Reformer Tubes

   • Inlet Manifold

   • Transition Piece from Radiant Outlet Manifold

   • Reducers / Reducer Assemblies

   • Long Tubes

   • Manifold

   • Tube Bevels

 

③ Direct Reduced Iron (DRI)

   Product range applied to Midrex and HYL-based steelmaking facilities where iron ore is directly reduced using reducing gas.

   • DRI Furnace Tubes

   • Gas Distributor of DRI Furnace

   • Sleeve Assemblies of DRI Furnace

   • DRI Furnace Tube Assemblies

Characteristic

① Material Technology for Extreme Environments

   - Delivers stable performance under severe operating conditions involving temperatures above 1,000°C, high pressure, carburization, and oxidation.

   - Utilizes optimized high-chromium and high-nickel alloys such as 25Cr-35Ni-Nb (RF35M), 35Cr-45Ni-Nb (RF45M), HP40Nb, and HP50 to simultaneously achieve excellent oxidation resistance, carburization resistance, and creep resistance.

 

② Uniform Microstructure Based on Centrifugal Casting

   - Maximizes microstructural uniformity and dimensional precision across both inner and outer tube surfaces.

   - Forms a high-density structure free from porosity, enhancing resistance to high-temperature creep rupture and achieving a design life exceeding 100,000 hours.

 

③ Shop-Welded Assemblies for Assured Field Quality

   - Supplied as fully assembled shop-welded products with 100% Radiographic Testing (RT) and Penetrant Testing (PT) completed under controlled factory conditions.

   - Eliminates field welding defect risks in advance, ensuring consistent installation quality while reducing construction time and turnaround schedules.

Application

 

Contacts

INSULATIONKOREA provides total packaged
solutions as one window for whole industries.

info@insulationkorea.co.kr