... 4140,4130,4340,4330,8620,9840,1.2714,1.2738 and so on.2:technique:forged,hot rolled, cold drawn,rolling ... steel bar, tool steel bar and so on.4.Excellent after-sales service5.Delivery condition: Hot forged, Heat-treatment (Normalized / Annealed / Quenched / ... time delivery. Provide users with cutting, turning, cold drawn, quenching and tempering, solid fusion heat-treatment on rough machining.