Vari-Wall has been manufacturing double butted chromoly bicycle tubes for more than 30 years. Our chromoly tubing is a tried and true industry standard steel alloy. The careful blend of chromium and molybdenum assure an excellent strength to weight ratio making it a tough stable alloy. We offer a variety of butted and straight wall heat treated (CMH) and non-heat treated (CMD) tubes that will weld and braze exceptionally well. Maximum tensile strength up to 750 MPa.