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Jiangsu Zhongliyou Special Steel Co., Ltd. specializes in premium special steel round bars and alloy steel round bars, covering carbon structural steel, alloy structural steel, gear steel, spring steel, bearing steel, mold steel and other major steel grades. Our main equivalent international grades include AISI 1045 (45#), AISI 5140 (40Cr), AISI 4140 / EN 42CrMo4 / SCM440 (42CrMo), as well as S45C, SCM435, 4130, 5150, 6150, 1.7218, 1.6580 and other European, American and Japanese standard round bars.

We own indoor warehouse storage yards equipped with full processing facilities including CNC band saws, peeling machines, grinding machines, and heat treatment equipment, providing one-stop deep processing services such as fixed-length sawing, cold drawn peeling, precision grinding, and quenching and tempering heat treatment, saving customers from secondary processing procedures.

The company serves manufacturing enterprises in die making, machining, auto parts, new energy, hydraulic automation, hardware fixtures, and related industries. We implement dual quality inspections for incoming and outgoing goods, strictly controlling material grade, dimensions, hardness, and surface quality. Relying on cooperative trunk logistics, we provide door-to-door delivery, accompanied by material after-sales service.

With a stable supply and complete specification range, and years of deep industry engagement, we have earned long-term cooperative recognition from processing plants across the country and overseas markets. We can supply round bars in hot rolled, forged, cold drawn, peeled and ground finished conditions, supporting third-party material test certificates and full material traceability.