10 x SMG Carbon Steel Beveling Tool Bits for OCE/OCP Models. At Capital Machinery Sales, you can expect our carbon steel tool bits are produced from high-quality tool steel, are manufactured and tested to the highest standards in the industry. Our carbon steel tool bits for pipe beveler are all standard machine operation for OCE and OCP machine models. Carbon steel tool bits are designed to offer a more cost-effective alternative to stainless steel, without the compromise to quality and accuracy of output.