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China Round Steel Supplier and Factory Direct

Round steel, a solid, long strip of steel with a circular cross-section, plays a vital role in the industrial and construction sectors. From a material properties perspective, it possesses a uniform microstructure, excellent strength and toughness, and can withstand significant external forces without easily deforming or breaking. Furthermore, its good machinability makes it easy to cut, bend, and weld, meeting diverse processing needs. Shunchen is a direct China factory and manufacturer specializing in round steel, supplying reliable products at competitive factory prices


Round steel’s applications are extremely wide-ranging. In the construction industry, it is often used as reinforcement in reinforced concrete structures, enhancing the stability and earthquake resistance of buildings. In the machinery manufacturing industry, it is a fundamental material for manufacturing key components such as shafts, gears, and bolts, ensuring the precise operation and longevity of equipment. In the automotive industry, it is used to manufacture drive shafts, chassis, and other components, contributing to safe vehicle operation.


Round steel comes in various specifications and a wide range of diameters, allowing for precise selection based on the specific requirements of different projects and products. Its high surface quality and good dimensional accuracy facilitate subsequent processing, making it an indispensable high-quality basic steel material for many industries.

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Structural Round Steel Bar for Engineering Use

Structural Round Steel Bar for Engineering Use

Looking to buy high-strength Structural Round Steel Bar For Engineering Use directly from Tianjin Shunchen? Our hot rolled steel bars (Φ5.5mm–250mm) comply strictly with GB/T702-2017 Group I standards (tolerance ±0.15mm). Engineered for machinery, construction, and automotive applications, we offer custom lengths, factory-direct pricing, and full technical guidance.
High Strength Steel Round Bar for Engineering

High Strength Steel Round Bar for Engineering

Shunchen High Strength Steel Round Bar For Engineering is available in Q235B, Q355B, Q355D, 45#, and 40Cr steel grades, with diameters from 5.5 to 250 mm. Manufactured by hot rolling, it supports structural components, shafts, gears, and machined engineering parts. Standard lengths range from 4 to 12 meters, with customized sizes and cutting services available for different engineering requirements.
Cold Drawn Steel Bar with Tight Dimensional Tolerance

Cold Drawn Steel Bar with Tight Dimensional Tolerance

Buy ShunChen Cold Drawn Steel Bar With Tight Dimensional Tolerance for precision manufacturing. Featuring ±0.02mm tolerance and Ra≤1.6μm surface finish, this cold drawn round bar delivers superior strength for CNC parts. Wholesale sourcing available with custom sizes, grades, and OEM supply.
Smooth Surface Round Steel Bar for Machining

Smooth Surface Round Steel Bar for Machining

ShunChen smooth surface round steel bar for machining are cold drawn with diameter tolerance ±0.02mm and surface roughness Ra≤1.6μm. Available in 3–100mm diameter, 2–6m length, cut to 12m, steel grades 10#, 20#, 45#, 40Cr, 304. They reduce machining allowance and suit automotive and precision machinery parts.
Hot Rolled Steel Hexagon Bar for Machining Parts

Hot Rolled Steel Hexagon Bar for Machining Parts

Shunchen provides Hot Rolled Steel Hexagon Bar For Machining Parts for wholesale purchase and industrial applications. Manufactured from Q235B and Q355B carbon structural steel, these hexagonal bars feature stable dimensions, machining-friendly surfaces and flexible processing options. Available with cutting, drilling, threading and surface treatments, they comply with GB, ISO, EN, ASTM and DIN standards for mechanical parts, fasteners and equipment manufacturing.
Alloy Steel Hex Bar for Mechanical Applications

Alloy Steel Hex Bar for Mechanical Applications

Alloy Steel Hex Bar For Mechanical Applications from Shunchen is a hexagonal steel material designed for mechanical component production. Its alloy steel composition provides improved hardness, strength, and resistance to deformation under working loads. The product is commonly processed into shafts, pins, fasteners, and customized parts for industrial equipment.
Professional China Shunchen manufacturer of high-efficiency Round Steel. Factory direct supply with OEM service. Advanced design and easy-maintainable quality for global projects.
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