... carbon steel, stainless steel,ANSI B36.10 pipe carbon and alloy steels Applications and Features :We are professional manufacturer of steel ... free cutting steel bar, 1215 environmentalist steel, Q235 steel and other special steel. We have various goods in different sizes ... comes to H7, H8, H9, can save cutting tools 40%, and increasing 40% productivity. 1. specification: Diameter: 25mm, 40mm, 50mm ...