... size, still can be imperial size and American standard. Material: Titanium, Titanium alloy Standard: Make acc to DIN, ISO, ANSI, BS ... and Gas, Hospitality, Tourism, Education and Government. Titanium standard parts and non standard parts, ISO, GB, DIN, ANSI, products include ... because they have a similar electronegativity to the superstructure material, contrary to the situation with screws and nuts in ...