10 X SMG Stainless Steel Heavy Duty Double Head Beveling Tool Bits. For fast, efficient weld preparation, bevelling and rounding off pipes over 30mm thickness, we have the double head bevelling tool bit designed for heavy duty applications. You can expect consistent and quality results with minimum physical effort. When it comes to spare and replacement products for SMG plate and pipe beveling machines, we have the premium quality product line to suit specific models and bevelling requirements. For heavy-duty applications over 30mm pipes, these double head stainless steel bevel tool bits deliver consistent results with minimal effort.