STP Series

Weld bead removers for external weld seam grinding

Weld bead removers for grinding the external weld bead on stainless steel tubes, suitable for use on lines equipped with TIG and LASER welding systems.

These machines are virtually flawless, the result of years of experience: features include adjustable working pressure, a centralized lubrication system managed by a timed pump, and inverters to regulate the number of oscillations and abrasive belt speed; processing can be performed either wet or dry.

The Mod. STP 3000/150/170 COASSIALE is our most popular model, with more than 600 units sold worldwide.

Our range of weld bead removers includes the following models:

  • Mod. STP 3000/100/40 MIGNON: the most compact model in the family, suitable for processing diameters from 5mm up to a maximum of 40mm. Highly recommended for installation on roll forming lines where space is limited.
  • Mod. STP 3000/150/170 COASSIALE (available in the standard painted steel version, with a stainless steel frame, or in the 95% stainless steel construction) – working capacity: min. ext. 6 mm – max. ext. approx. 154 mm.
  • Mod. STP 3000/150/410 – working capacity: from diameter 50 mm up to a maximum of 410 mm.
  • COLUMN-MOUNTED WELD BEAD REMOVER – working capacity: min. ext. 100 mm – max. ext. approx. 500 mm.

Other Series

Machines for Metal Finishing

Follow us



About Us


A global leader in automatic metal finishing solutions, BOSSI boasts more than fifty years of expertise. We provide state-of-the-art machinery recognized for its durability, quiet running, high-precision finishing, and cost-effective maintenance.