Technical Overview of ASTM B668 / ASME SB 668 Standard
This regulatory document specifies the requirements for the production of seamless pipes and tubes made of high-alloy UNS N08028 and UNS N08029 materials. Products manufactured according to this specification are intended for use in highly corrosive environments where high structural stability and resistance to localized corrosion are required.
The production cycle allows for both cold and hot working methods. The quality control technological parameters and general delivery requirements comply with the provisions of the B829 specification. EV Group China ensures strict adherence to these standards, guaranteeing that the chemical composition and mechanical properties of the metal products meet the established regulations.
Standardization Features
In the B668 specification, the inch-pound system is adopted as the base unit of measurement. Values provided in parentheses represent reference converted indicators in the SI system and have no legal standing during acceptance testing.
When designing piping systems based on UNS N08028 and N08029 alloys, it is important to note that this standard is not an exhaustive guide to safety. EV Group China specialists recommend conducting additional strength characteristic calculations, taking into account specific operating conditions at the particular facility.