Overview
ISO 6758:1980 specifies the requirements for welded steel tubes used in heat exchangers. This International Standard covers plain end tubes manufactured from both unalloyed and alloyed steels, including austenitic stainless steels. These tubes are designed specifically for use in heat exchanger construction and exclude those intended for direct flame exposure. The standard ensures consistent quality in dimensions, mass, material properties, and manufacturing tolerances, facilitating reliable performance in heat transfer applications.
Key Topics
Applications
- Heat Exchanger Manufacturing
- These welded steel tubes form the core component in various heat exchanger designs used in industries such as petrochemical, power generation, HVAC, and refrigeration
- Retrofitting and Repairs
- The availability of metric dimensions aligned with inch sizes supports re-tubing and maintenance of legacy equipment
- Process Industries
- Reliable tube specifications help ensure safe and efficient thermal transfer in chemical plants, oil refineries, and food processing facilities
- Quality Assurance in Tube Production
- ISO 6758 enables manufacturers to maintain international standards compliance, ensuring product consistency for global markets
Related Standards
- ISO 2604 – Steel Products for Pressure Purposes:
- Part 3: Electric resistance and induction welded tubes
- Part 5: Longitudinally welded austenitic stainless steel tubes
- ISO 4200 – Steel Tubes: Calculation of Masses
- Other standards governing heat exchanger components, materials testing, and dimensional verification help complement ISO 6758 for comprehensive quality control
Keywords: ISO 6758, welded steel tubes, heat exchangers, unalloyed steel, alloyed steel, austenitic stainless steel, tube dimensions, tube tolerances, tube mass, tube designation, metric dimensions, tube manufacturing standards, heat exchanger tubes, steel tube standards
