Our company has accumulated extensive experience in non-destructive testing, compliant with national, European, and American standards. Our technology is professional, stable, and precise. Our main product blocks include standard blocks, comparative blocks, and we also support customizing non-standard blocks.

· Tube Comparison Samples: Longitudinal/horizontal inner/outer slots, diagonal inner/outer slots, layered/thickness measuring standard rings, etc.

· Billet comparison samples: flat bottom holes, central transverse holes, eccentric transverse holes, surface grooves, etc.

· Plate material comparison samples: Flat holes, flat grooves, oblique grooves, etc.