Carbon Steel Round Bar Supplier | Custom Length & Stocks

Suministros de acero CJM carbon steel round bars for machining, fabrication, shafts, pins, fasteners, machinery components and general industrial applications.

Nuestra carbon steel round stock is available in different grades, diameters, lengths and delivery conditions, with cut-to-length processing and material certification available according to project requirements.

Product Highlights

• Carbon steel round bar in multiple grades
• Different diameters and lengths
• Hot rolled and cold finished options
• Cut-to-length service
• MTC / inspection documents
• Export packing and delivery

Carbon Steel Round Bar Specifications

Artículo	Especificación
Producto	Carbon Steel Round Bar
Material	Acero al carbono
Shape	Round
Grados	1018, 1025, 1045/C45, A36, A105, EN8 and other grades according to requirements
Diámetro	Various diameters according to grade and supply condition
Longitud	Standard lengths and cut-to-length
Fabricación	Hot Rolled / Cold Drawn / Forged, depending on grade
Superficie	Black / Bright / Polished, depending on supply condition
Normas	ASTM / AISI / SAE / EN / DIN / JIS, depending on grade
Condiciones de entrega	As Rolled / Normalized / Annealed / Q&T, depending on grade
Certificación	MTC / EN 10204 3.1, according to order requirements

Actual dimensions, manufacturing methods, surface conditions and delivery conditions depend on the selected grade and product specification.

Carbon Steel Round Bar Grades

CJM Steel supplies a range of carbon steel and related engineering round bar grades for machining, fabrication, structural and industrial applications.

To better understand section properties, chemical compositions, and how to choose the right material for your project, you can review our steel round bar grades, types, standards and selection guide.

Grado	Tipo	Aplicaciones típicas	Product Page
AISI 1018	Acero bajo en carbono	Machining, shafts, pins, general components	Barra redonda AISI/SAE 1018
AISI 1025	Acero al carbono	Machinery parts, bolts, nuts and general components	Barra redonda de acero AISI/SAE 1025
AISI/SAE 1045 / C45	Acero al carbono medio	Shafts, gears, axles and machinery components	Barra redonda de acero AISI/SAE 1045 C45
A36	Carbon Structural Steel	Fabrication, structural components and machinery	Barra redonda de acero A36
A105	Carbon Steel Forging Grade	Flanges, fittings, pressure and industrial components	Barra redonda de acero A105
EN8	Acero al carbono medio	Shafts, pins and machined components	Barra de acero redonda EN8/EN9 Serie En
A572 / S355JR	High-Strength / Low-Alloy Structural Steel	Construction, machinery and structural components	Barra redonda A572/S355JR

Nota: The table above highlights our most commonly requested carbon steel round bar grades.

Additional structural, alloy, and specialized grades are available; please explore our carbon steel bar category o contacte con nuestro equipo to confirm specific order requirements, dimensions, and applicable standards.

Carbon Steel Round Bar Sizes

Carbon steel round bars are available in different diameters and lengths depending on the selected grade, manufacturing process and delivery condition.

Typical supply requirements can include:

Diameter Range	Available Length	Supply Form
10–20 mm	Standard / Cut to Length	Hot Rolled / Cold Finished
21–50 mm	Standard / Cut to Length	Hot Rolled / Cold Finished
51–100 mm	Standard / Cut to Length	Laminado en caliente
100 mm+	On Request	Hot Rolled / Forged

Actual availability depends on grade and production requirements.

For standard dimensions, metric and inch sizes, and theoretical weight calculations, see our guide to Steel Round Bar Sizes, Dimensions and Weight.

Carbon Steel Round Bar Supply Forms and Finishes

Different supply forms can be selected according to machining requirements, dimensional accuracy and final application.

Supply Form	Typical Characteristics
Laminado en caliente	General-purpose round bar for fabrication and machining
Cold Drawn	Improved dimensional accuracy and surface finish
Peeled	Improved surface condition and dimensional consistency, where available
Ground	Higher surface precision for machining applications, where available
Cut to Length	Supplied according to required component length

The available supply form and surface finish depend on the selected grade, diameter and production requirements.

Carbon Steel Round Bar Applications

Machining Components

Carbon steel round stock is commonly used for shafts, pins, bushings, axles and other machined components.

Machinery Manufacturing

Round bar stock can be supplied for machine parts, rollers, connecting components and other engineering applications.

Fabricación

Suitable carbon steel grades can be used for fabricated components where machinability, weldability and general mechanical performance are required.

Fasteners and Forged Components

Selected grades can be supplied for fasteners, forgings, flanges and other formed components according to the applicable material specification.

General Industrial Use

Carbon steel round bars are also used for maintenance parts, replacement components and general industrial manufacturing.

Carbon Steel Round Bar Quality and Certification

CJM Steel supports inspection and documentation requirements for international orders.

Quality control and documentation can include:

• Chemical composition verification
• Mechanical property testing
• Dimensional inspection
• Surface inspection
• Heat number traceability
• Mill Test Certificate
• EN 10204 3.1 MTC
• Third-party inspection, if required

Inspection and certification requirements can be arranged according to the applicable material standard and project requirements.

Why Choose CJM Steel as Your Carbon Steel Round Bar Supplier?

Multiple Grade Options

We supply different carbon steel grades for general engineering, machining, fabrication and industrial applications.

Flexible Dimensions

Different diameters and lengths are available according to the selected product and project requirements.

Cut-to-Length Service

Round bars can be supplied in required cutting lengths where applicable, helping reduce additional processing at the customer’s facility.

Material Certification

MTC and relevant inspection documents can be provided according to the applicable specification and order requirements.

Export Supply

CJM Steel supports international orders with export packing, documentation and shipment coordination.

How to Order Carbon Steel Round Bar

1. Specify the Grade

Provide the required grade, such as AISI 1018, AISI 1045, C45, A36 or another specified material.

2. Confirm Diameter and Length

Specify the required diameter × length, including any cut-to-length requirements.

3. Confirm Quantity and Delivery Requirements

Provide the required quantity, destination and preferred delivery schedule.

4. Request a Quote

CJM Steel can confirm material availability, specifications, pricing, lead time and documentation according to your requirements.

Send Your Requirements:

Grade × Diameter × Length × Quantity × Destination

Preguntas frecuentes

What is carbon steel round bar?

Carbon steel round bar is a solid cylindrical steel product used for machining, fabrication, shafts, pins, fasteners and other industrial components.

What grades are available in carbon steel round bar?

Common options include AISI 1018, 1025, 1045/C45, A36, A105 and EN8, with additional grades available according to the required specification.

What is the difference between hot rolled and cold drawn round bar?

Hot rolled round bar is commonly used for general fabrication and machining, while cold drawn round bar provides improved dimensional accuracy and surface finish.

Can carbon steel round bar be cut to length?

Yes. Cut-to-length service can be arranged according to the required diameter, length and order quantity.

How do I buy carbon steel round bar?

Provide the required grade, diameter, length, quantity and destination. The supplier can then confirm availability, price, lead time and certification requirements.

Conclusión

Suministros de acero CJM carbon steel round bar for machining, fabrication, machinery manufacturing and other industrial applications. With multiple grade options, flexible dimensions, cut-to-length service and material certification, we support international buyers with practical carbon steel bar stock solutions.

Request a Quote for Carbon Steel Round Bar

P: ¿Cuáles son los principales productos/servicios de su empresa?

R: Somos fabricantes profesionales de productos de acero al carbono, acero aleado y perfiles. Tenemos la experiencia del negocio de acero por más de 10 años y nuestros productos se exportan a Oriente Medio, Suramérica, Asia sudoriental, África, Asia del sur y del este etc.

P: ¿Puedo visitar su fábrica?

R: Por supuesto, invitamos a clientes de todo el mundo a visitar nuestra fábrica.

P: ¿Cuáles son sus condiciones de pago?

R: 30% T/T depósito y 70% saldo antes del envío.

P: ¿Cuál es su plazo de entrega?

R: Para las existencias, podríamos transportar las mercancías al puerto de carga dentro de los 7 días después de recibir el depósito; Para la producción, por lo general toma alrededor de 15-30 días después de recibir el depósito.

P: ¿Proporcionan muestras? ¿Son gratuitas o de pago?

R: Las muestras están disponibles de forma gratuita, pero el flete de mensajería será cubierto por la cuenta del cliente.

P: ¿Aceptan la inspección de terceros?

R: Sí, aceptamos inspecciones de terceros.

P: ¿Por qué debería comprarles a ustedes y no a otros proveedores?

R: Integrando los recursos superiores de la industria siderúrgica de China, proporcionamos a los clientes productos de acero de alta calidad a precios preferenciales, y podemos garantizar que las mercancías se entregan a los clientes a tiempo.

P: ¿Cómo garantizan la calidad?

A: Siempre una muestra de pre-producción antes de la producción en masa;Siempre 100% inspeccionado antes del envío