Non-destructive testing. Ultrasonic testing of steel bars1 Scope This European Standard describes the techniques to be used for the manual, pulse echo, ultrasonic testing of steel bars of diameter or equivalent thickness less or equal to 400 mm or equivalent section. Mechanized, semi automatic or automatic techniques may be used but should be agreed between the purchaser and the supplier.

loops of steel bar or flat plates incorporating a hole

property requirements and dimensional tolerances for forging stock of copper and copper alloys

The selected detection and identification methods are based on a combination of size classification and chemical composition analysis

h)      Requirements and guidance for inspection procedures have been added

BS 7181 provides guidance on appropriate materials

and improve the organization’s operations

Particulate material collected on a filter is digested with acid

the recommendations of the biological indicator manufacturer for storage and use should be followed

BS 6888 defines the terms used and states the accuracies required for instrumentation used for calibration purposes

Where other arrangements are provided

Requirements for biological indicators for particular specified processes are provided in the other Parts

375 mm thick