ASTM A333 Grade 1 Carbon Steel, Integral Low-Finned Heat Exchanger Tube

ASTM A333 Gr.1 Low Fin Tube

ASTM A333 Gr.1 is a carbon steel grade specifically designed for low-temperature service. Its key characteristic is excellent impact toughness at sub-zero temperatures, making it suitable for applications where brittle fracture is a concern.

The ASTM A333 Gr.1 Low Fin Tube is an integrally finned tubular product manufactured by cold-forming fins from the wall of the base tube. This design significantly increases the external surface area, enhancing heat transfer efficiency while maintaining the material's inherent low-temperature toughness.

Chemical Composition(%)

Mechanical Properties

Key Features & Advantages

Low Temperature Toughness: Guaranteed impact properties at temperatures as low as -45°C (-50°F)

Enhanced Heat Transfer: Low fin design increases heat transfer area by approximately 2.5-3.5 times compared to bare tubes

Integral Fin Construction: Fins formed from the tube wall ensure perfect thermal contact and mechanical integrity

Cost-Effective Solution: More economical than stainless steels for low-temperature applications

Compact Design: Allows for smaller heat exchanger bundles while maintaining thermal performance

Comparison with Related Grades

Gr.1 vs. Gr.6:
Gr.6 contains 3.5% nickel for service at even lower temperatures (down to -100°C). Gr.1 serves as the economical choice for moderate low-temperature applications.

Applications of ASTM A333 Gr.1 Low Fin Tube

LNG Processing: Heat exchangers and vaporizers in liquefied natural gas facilities

Refrigeration Systems: Evaporators and condensers in industrial refrigeration

Chemical Processing: Low-temperature heat exchangers in petrochemical plants

Cryogenic Storage: Heat transfer equipment for liquid gases storage systems

Industrial Gas Plants: Heat exchangers in air separation and gas processing units

The ASTM A333 Gr.1 Low Fin Tube combines excellent low-temperature mechanical properties with enhanced heat transfer capability, making it an ideal choice for efficient and reliable performance in cryogenic and low-temperature heat exchange applications.

Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories,  the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always.   The factories already got certificates like : ABS, LR, DNV-GL, BV, KR, CCS, ASME, ISO 9001, ISO14001, ISO18001, ect.

Our factories main products as below : 
Factory 1th: Stainless steel seamless tube, Duplex steel seamless tube, Super duplex steel seamless tube, Nickel alloy steel seamless tube;

Factory 2th: Carbon steel seamless tube, Alloy steel seamless tube; Enhanced Heat Tranfer Tube, low fin tube ,U bending workshop;
Factory 3th: High frequency welding fin tube(HFW fin tube, Solid Fin tube, Studded Tube, Serrated Fin tube, Longitudinal welding fin tube), Wound fin tube(L type fin tube, LL type fin tube,  KL type fin tube), Embedded G type fin tube , Extruded fin tube,  low fin tube, U bend & 180deg. Return;

Yuhong Holding Group also has gained rich experience for project package( products contain:Pipes, Fittings, Flanges, heat exchanger, furnace, fired heater, air cooler, boiler) , YUHONG brand has marked its global presence in more than 85 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand, Singapore, Malasyia, Indonesia, Thailand, Vietnam, Ukraine, Turkey,Sauid Arabia, Qatar, U.A.E,Israel,India, UK, France, Italy, Gernmany, Poland, Spain,... We have successfully implemented the orders of Cross Country Pipelines for our valuable customers. In addition, we have also developed a huge network of contacts and strategic alliances with most important manufacturers as stockists around the world.