The ID type arc-welded bushing is internally threaded with the thread length which varies according to the ID type bush size.
The steel bush with ID type internal thread is supplied complete with ceramic ferrule and can be supplied with internal thread starting from M5 up to M16.
Through the use of the drawn arc stud welding machine, the arc weld type ID bush is welded in a long arc using a ceramic ferrule or welded in gas protection with appropriate limitations.
The production of the ID type internally threaded bushing is carried out using the 4.8 iron, also available in the A2-50 type stainless steel arc welding bush and the ID type arc welding bushing in 1.4571.