Steel Round Bar

Factory-direct AISI 4340 alloy steel bars with high strength, toughness, and fatigue resistance. Available in OD 6-630mm, polished surface, and custom cutting. Certified to ASTM/GB/JIS standards with processing services.

AISI 4340 alloy steel rods (20-300mm) offer ultra-high strength, deep hardenability, and excellent toughness. Certified to ASTM standards, they're ideal for molds, gears, and aerospace components. Custom cutting, polishing, and heat treatment available.

ASME AISI4340 alloy steel round bar offers ultra-high strength, deep hardenability, and high fatigue resistance. Available in diameters 20-300mm with custom cutting, polishing, and heat treatment services. Certified to ASTM, EN, DIN standards.

AISI 4340 alloy steel round bar offers ultra-high strength, deep hardenability, and excellent toughness. Available polished, OD 6-630mm, with cutting, heat treatment, and custom services. Compliant with ASTM, JIS, EN, DIN standards.

High-strength 40CrNiMoA/4340 alloy steel round bars (OD 6-630mm). Offers superior durability, fatigue resistance, and high-temperature strength. Polished surface, custom cutting, and full processing services available. Compliant with ASTM, DIN, GB standards.

AISI4340 alloy steel round bars (13-300mm diameter, 6m length) offer ultra-high strength, toughness, and fatigue resistance. Certified to ASTM/GB/JIS standards with custom cutting, polishing, and heat treatment services. Ideal for molds, gears, and critical aerospace components.

AISI 4340 alloy steel round bars (13-300mm) offer ultra-high strength, deep hardenability, and high fatigue resistance. Certified to ASTM/EN/DIN standards with custom cutting, polishing, and heat treatment services available.

SAE AISI4340 alloy steel round bars (13-300mm) offer ultra-high strength, deep hardenability, and high fatigue resistance. Available with cutting, polishing, and heat treatment services. Certified to ASTM, DIN, JIS, and EN standards.

EN 1.7131 16MnCr5 steel rods (12-300mm) offer superior case-hardening properties, high tensile strength, and polished finish. Ideal for gears, shafts, and transmission parts. ISO 9001 certified with custom sizing and fast delivery.

DIN 1.6523 / AISI 8620 alloy steel rectangular bars offer superior hardenability, excellent machinability, and good weldability. Ideal for carburized gears, shafts, and bearings requiring a hard case and tough core. Available 6-300mm, certified quality with custom sizing.

DIN 16MnCr5 (1.7131) alloy steel round bar for case hardening. Certified to EN 10084, ideal for gears, shafts & bearings. Polished surface, OD 6-630mm. ISO 9001 quality with custom cutting & heat treatment services.

AISI 8620 alloy steel bars offer excellent machinability, weldability, and high hardenability. Ideal for gears, shafts, and bearings with ISO 9001 certification and custom sizing from 6-630mm.

SAE8620 alloy steel round bar offers high hardenability, excellent machinability, and superior weldability. Ideal for gears, shafts, and bearings requiring a tough core and hard carburized case. Available in OD 6-630mm with ISO 9001 certified quality.

Cold drawn 40Cr round bar, polished & quenched/tempered (H9/H11). High strength, durability for structural/tool/die steel. OD 6-630mm. Certified TISCO/BAO STEEL origin. Custom sizes available.

Hot-rolled alloy steel bars (SAE4130/4140/4340) with high fatigue strength, impact resistance, and custom sizing. Available polished, certified to ASTM standards, with 500-ton production capacity and custom options.

ASTM A322 SAE4140 alloy steel round bar with H9/H11 tolerance. Offers high fatigue strength, impact resistance, and toughness. Custom sizes, polished surface, and standard export packaging available.

ASTM A322 4340 alloy steel round bars offer high strength, toughness, and shock resistance. Available polished in OD 6-630mm with full customization. Ideal for heavy machinery shafts and vital nitrided components.

Grade 4340 alloy steel round bar offers high strength, toughness, and shock resistance. Available polished, OD 6-630mm, with custom options. Ideal for heavy machinery shafts and vital components.

SAE4340 alloy steel round bars offer high strength, toughness, and shock resistance. Available in OD 6-630mm with polished surface. Custom specifications and bulk capacity (500 tons) for shafts, bolts, and industrial components.

SAE4340 hot-rolled annealed steel bars offer high strength, toughness, and excellent hardenability. Ideal for heavy machinery parts like turbine shafts and gears. Available in widths 10-2000mm with polished surface and 50,000kgs monthly capacity.