Source: https://tbxnexxia.com/rd/ > TBX Nexxia combines TUBACEX's metallurgical expertise and R&D capabilities to develop high-performance CRA OCTG solutions for the most demanding well environments. Research & Development # Advanced metallurgy well connected. Engineered for critical wells. TBX Nexxia combines TUBACEX's metallurgical expertise and R&D capabilities to develop high-performance CRA OCTG solutions and SENTINEL® premium connections for the most demanding well environments. Explore our R&D From alloy design and material selection to manufacturing optimization and product qualification. Our integrated approach connects research, engineering and industrial execution to deliver reliable performance under challenging operating conditions. API Spec 5CRA Certified CRA tubulars manufactured to API 5CRA API Spec 5C5 CAL IV Certified premium connections qualified Up to C276 top CRA materials for seamless tubes 6 σ statistical approach to mechanical-property variability Our R&D ## A closer look at every alloy 1. 01 ### Advanced material development Tailored metallurgy for demanding well environments. TBX Nexxia develops advanced CRA grades engineered to withstand challenging combinations of pressure, temperature and corrosive conditions, including high concentrations of chlorides, H₂S and CO₂. 1. 02 ### Process optimization From material design to robust industrial performance. Through extensive final-product sampling, statistical analysis and 6 Sigma methodologies, we evaluate mechanical-property variability and establish correlations between manufacturing parameters and product performance. 1. 03 ### Testing & validation Proven performance in critical well environments. Our testing programs combine microstructural and mechanical characterization with corrosion resistance evaluations, including localized pitting and crevice corrosion, SCC and SSC, supported by specialized laboratories approved by major end users. ENAC · Accredited ISO 17025 Laboratories ×20,000 electron microscopy characterization 7 materials and metallurgy experts, 4 of them PhDs in metallurgy IP several patents granted R&D laboratories ## Best in class in-house R&D laboratories. Talk to our R&D team Premium connections development ## From design inputs to field-proven connections A design and validation workflow based on API Q1, from conceptual design and FEA verification to full-scale qualification testing. 1. 01 Design inputs Definition of design inputs and conceptual design for new connection families. 1. 02 FEA verification Internal FEA verification using anisotropic material definition (SENTINEL® Tech. Center). 1. 03 Full-scale testing Qualification as per API 5C5 / ISO 13679, up to CAL IV. 1. 04 Coatings & finish Rig-ready solution: special coating and eco lubricant, with reduced environmental footprint. 1. 05 New applications Specific testing protocols, such as CCS thermal and pressure cycling at -35 °C. CCS Superduplex 125 ksi PREN > 40 Crevice corrosion testing Case study ### Superduplex qualified for CO₂ injection Extensive corrosion testing of duplex and superduplex grades (125 ksi PSL 2, PREN > 40) under different impure CO₂ chemistry specifications, with controlled impurity concentrations and following end-user approval conditions — including crevice corrosion testing. [Explore our grades](https://tbxnexxia.com/octg-solutions/materials-sizes-grades/#grades) R&D collaboration ## Working alongside our customers From material selection to proprietary alloy development. We work alongside customers to address specific well requirements and support reliable long-term performance. Co-design and technical assistance Materials engineering, project-specific testing and customer-oriented solutions through direct collaboration. Product and technology development Our R&D team is at the forefront of new products and technologies for the OCTG market, turning advanced metallurgy into the solutions tomorrow's wells will need. Partnership for scaling-up Industrial validation of new solutions in collaboration with customers, enabling excellence and reliability in the production process. Applications ## Engineered for the world's most demanding wells Exploration & Production ### Production tubing and casing widely used and tested in the most demanding exploration and production wells. CRA tubular solutions are designed and proven for highly corrosive, HP/HT and deepwater oil & gas wells, where material selection, connection performance and long-term well integrity are critical. SENTINEL® Prime has been specifically designed and tested on CRA materials to withstand these extreme operating conditions. Talk to our team Enhanced Oil Recovery & Water Injection ### Engineered for high-pressure water injection in demanding reservoir conditions. CRA tubular solutions provide enhanced resistance to chloride-induced corrosion, pitting and stress corrosion cracking in seawater and treated-water injection environments. Using duplex, superduplex and nickel-based alloys, TBX Nexxia helps ensure reliable injection performance, long-term well integrity and reduced lifecycle costs in EOR operations. Talk to our team Carbon Capture, Utilization and Storage ### TX25NP-125 Super Duplex and SENTINEL® Connections, tested for CO₂ injection with impurities. SENTINEL® Connections have been tested as per specific CCUS well conditions, including cryogenic thermal and pressure cycling. Talk to our team Geothermal Wells ### Duplex stainless steels and nickel alloys built for extreme temperatures and aggressive brines. High-performance duplex stainless steels and advanced nickel alloys with superior resistance to stress corrosion cracking, pitting and localized erosion, maintaining strength and integrity at elevated temperatures. Talk to our team Acid Gas Injection ### Duplex and nickel alloys engineered for injection environments with high concentrations of H₂S and CO₂. Using advanced duplex stainless steels and nickel alloys with tightly controlled microstructures, TBX Nexxia delivers reliable pressure containment, long-term integrity and enhanced resistance to SSC and HIC. Talk to our team Research & Development ## From metallurgy to validated, trusted performance. At TBX Nexxia we connect materials expertise, process engineering and rigorous testing to turn complex well requirements into qualified CRA OCTG solutions. 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