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Dalian Dongfei Special Steel Products Co., Ltd.
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Polished Round Bar

Diameter: Ø3–200 mm | Length: 1000–6000 mm | EN 10204 3.1

Grade Quick Guide

Choose Polished Round Bar by Steel Family

Dongfei supplies polished, peeled, ground and cold drawn steel round bars for CNC machining, mold making, shafts, tooling and engineering components. Popular grades include 4140, 4340, 42CrMo4, SCM440, H13, D2, P20, SKD11 and SKD61, available with cut-to-size service, EN 10204 3.1 mill test certificate and export packing.

Alloy Steel Grades

Alloy Structural Steel Round Bar

4140 / 42CrMo4 / SCM440
4340 / 34CrNiMo6

For shafts, gears, CNC machining parts and engineering components. Available in peeled, ground, cold drawn and heat-treated conditions according to customer requirements.

View Specs → Tool & Mould Steel

Tool & Mould Steel Round Bar

H13 / 1.2344 / SKD61
D2 / 1.2379 / SKD11
P20 / 1.2311

For mold making, die casting tools, cold work dies, plastic molds and precision tooling parts.

View Specs → Stainless Steel

Stainless Steel Polished Round Bar

304 / 316 / 420 / 440C

For precision machining, shafts, mold components and corrosion-resistant industrial parts.

View Specs → High-Speed Tool Steel

High-Speed Tool Steel Round Bar

M2 / M35 / M42

For cutting tools, drills, punches, milling cutters and high-wear tooling applications.

View Specs →

Send your steel grade, diameter, length, quantity and delivery country. Our team will provide a quotation based on your machining or mold steel requirements.

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Polished Round Bar
Tool & Mould Steel Polished Round Bar
Ø1.5–120 mm | L 1000–6000 mm | EN 10204 3.1
Available in coil, cold drawn, ground, pre-hardened and peeled conditions.
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Polished Round Bar
Stainless Steel Polished Round Bar
Ø1.5–120 mm | L 1000–6000 mm | EN 10204 3.1
Available in coil, cold drawn, ground, pre-hardened and peeled conditions.
View Specs
Polished Round Bar
High-Speed Tool Steel (HSS) Round Bar
Ø1.5–120 mm | L 1000–6000 mm | EN 10204 3.1
Available in coil, cold drawn, ground, pre-hardened and peeled conditions.
View Specs
Polished Round Bar
Alloy Structural Steel Round Bar
Ø1.5–120 mm | L 1000–6000 mm | EN 10204 3.1
Alloy structural steel bars supplied as coil, cold drawn, ground or Q&T peeled for different machining needs.
View Specs
Polished Round Bar
Bearing Steel Round Bar
Ø1.5–120 mm | L 1000–6000 mm | EN 10204 3.1
Bearing steel bars offer high hardness, excellent wear resistance and fatigue strength for bearings and precision rotating components. Available in coil, cold drawn, ground and peeled conditions.
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Polished Round Bar
Heat Resistant Steel Round Bar
Ø1.5–120 mm | L 1000–6000 mm | EN 10204 3.1
Heat resistant steel bars are designed for high-temperature service, offering good oxidation resistance and stable mechanical performance. Available in coil, cold drawn, ground and peeled conditions for different machining needs.
View Specs