TOBO ALLOY GROUP TOBO Alloy Group is a mature, steady and energetic high-tech company, specializing in manufacture of high-temperature alloys and corrosion resistant alloys, such as Hastelloy, Haynes,
Alloy Steel Round Bar carbon steel round bar SAE4140, ASTM4140, 42CrMo4, DIN1.7225, SCM440,42CrMo Alloy Steel bar Products round bar Material SS400 S45C S20C Standard ASTM A240,GB/T3280-2007,JIS4304...