In the oil and gas extraction industry, petroleum cracking tubes, as core components of critical equipment, directly impact the safety and productivity of operations. Since the petroleum cracking process involves high temperatures, high pressure, and corrosive media, it is essential to use high-quality seamless steel tubes to ensure reliable equipment operation and long-term service life.

Key Performance Requirements for Petroleum Cracking Tubes

High-Temperature and High-Pressure Resistance

The petroleum cracking process typically operates at high temperatures of 400–800°C and high pressures of 10–30 MPa. This requires seamless steel tubes to possess excellent high-temperature strength and creep resistance. The material must maintain stable mechanical properties under prolonged high-temperature conditions without significant deformation or failure.

Corrosion Resistance

The presence of corrosive media such as hydrogen sulfide, carbon dioxide, and chlorides during petroleum cracking demands exceptional corrosion resistance from seamless steel tubes. Especially under high-temperature and high-pressure conditions, corrosion rates can accelerate significantly, making it necessary to use seamless steel tubes made of special alloy steels.

Hydrogen Damage Resistance

During hydrocracking, hydrogen permeates the steel under high temperature and pressure, leading to hydrogen embrittlement, which reduces material toughness. Therefore, seamless steel tubes for petroleum cracking must exhibit strong resistance to hydrogen damage.

Five Key Factors for Selecting Petroleum Cracking Tubes

Material Selection

Cr-Mo series alloy steels, such as 15CrMo, 12Cr1MoV, and 1Cr5Mo, should be chosen for manufacturing seamless steel tubes. These materials offer excellent high-temperature strength and corrosion resistance, meeting the demanding conditions of petroleum cracking.

Manufacturing Process

Hot-rolled or cold-drawn seamless steel tube production processes must be employed to ensure a weld-free tube body with a uniform and dense microstructure. Advanced controlled rolling and cooling techniques can further refine the grain structure, enhancing the material’s overall performance.

Dimensional Accuracy

Petroleum cracking tubes require precise dimensional control, with outer diameter tolerances within ±0.75% and wall thickness tolerances within ±10%, to ensure assembly precision and sealing performance.

Heat Treatment Process

Appropriate heat treatment optimizes the microstructure of seamless steel tubes, improving their high-temperature performance and corrosion resistance. The stability of the heat treatment process directly affects product consistency.

Quality Certification

Selected seamless steel tubes for petroleum cracking must come with complete quality documentation, including material reports, heat treatment records, and non-destructive testing reports, complying with relevant standards such as API and ASTM.

Recommended Professional Manufacturer

Changzhou Tenjan Steel Tube Co., Ltd. is a professional seamless steel tube manufacturer with comprehensive production equipment and a robust quality assurance system. The company employs advanced seamless steel tube production processes, equipped with fully automated heat treatment production lines and ultrasonic testing equipment, ensuring stable and reliable product quality.

The petroleum cracking seamless steel tubes produced by the company are made from high-quality alloy steel materials and undergo strict heat treatment processes, delivering excellent high-temperature strength, corrosion resistance, and hydrogen damage resistance. The products are widely used in cracking units in refining and petrochemical industries, receiving consistent praise from users.

Changzhou Tenjan Steel Tube Co., Ltd. has established a complete traceability system, with strict quality control at every stage from raw material intake to finished product delivery. The company is certified under the ISO9001 Quality Management System and API, ensuring compliance with international standards.

Conclusion

Selecting the right seamless steel tubes for petroleum cracking is crucial to ensuring the safety and efficiency of oil and gas extraction. Users are advised to conduct comprehensive evaluations based on material selection, manufacturing processes, dimensional accuracy, heat treatment quality, and certification completeness, and to choose suppliers with a strong reputation and professional production capabilities.

With its technical expertise and stringent quality management, Changzhou Tenjan Steel Tube Co., Ltd. provides users with high-quality petroleum cracking seamless steel tubes and comprehensive technical support. For more product information or technical consultation, please call 0519-88789990 or visit the official website www.tenjan.com. Choose professionalism, choose safety—let us provide reliable assurance for your oil and gas extraction operations.