Defect detect Standards: according to GB / T 6402 Paul I / II / III, also can according to export standards SEP1921  CLASS C/C, D/D, E/E. Standard reference number: DIN 7527-6,EN  10204, SEP  1921, EN  10228-3, EN  10250, N10083, SEW 550

Steelmaking process: EAF + LF refining furnace + VD vacuum degassing furnace + Ar cast + ingot (bottom cast)

Delivery status: Hot forging + normalize / anneal + Turning + quenching / temper, we can also provide the delivery status that required by customer.