... bar2. Specification: S7-S50 mm3. Standard: DIN,JIS,ASTM,AISI,BS,SAE,ISO,TOCT,GB,ABNT4. Payment: By T/ ... or L/C, 5. Delivery: 10-30 days6. Grades:SAE/AISI: 3415, 4130, 4135, 4140, 4142, 4320, 4340, 5115, ... years, Strong Special Steel provided a large number of high-quality steel materials to aviation, aerospace, petroleum, die and ... North China Agent die steel hexagonal bar SAE AISI 3415 / 4130 / 4135