Designed for premium performance in pipeline construction. These wheels are specially formulated and reinforced for grinding the root pass and joint welds between passes in pipeline construction and pipe fabrication. The do not contain iron, sulfur or chlorine and are guaranteed not to contaminate stainless steel. Thin for fast and free cutting and grooving. These can also be used for cutting sheet metal. Designed for premium performance in pipeline construction. These wheels are specially formulated and reinforced for grinding the root pass and joint welds between passes in pipeline construction and pipe fabrication. The do not contain iron, sulfur or chlorine and are guaranteed not to contaminate stainless steel. Thin for fast and free cutting and grooving. These can also be used for cutting sheet metal.