Wholesale High-Quality 15# 20# 35# 45# 50# 55# 60# Hot Rolled Carbon Steel Round Bar Manufacturer & Supplier from China Manufacturer and Supplier

High-Quality 15# 20# 35# 45# 50# 55# 60# Hot Rolled Carbon Steel Round Bar Manufacturer & Supplier from China

Short Description:

Hot Rolled Carbon Steel Round Bars are made from ranges of high quality carbon steels 15#, 20#, 35#, 45#, 50#, 55#, 60# etc. These grades possess a good balance of strength, toughness, machinability and weldability which make them useful for various industrial and engineering applications.

The round bars predictably deliver solid mechanical and dimensional properties, owing to the hot rolling manufacturing process. They find their application as shafts, axles, gears, fasteners, parts of machines, parts of construction machinery, parts of agricultural machinery, and general engineering components. Various lengths and diameters as well as different surface finishes are available for different project needs.

Standard: ASTM, AISI, EN, DIN, JIS, GB

Material: 08F, 08, 10F, 10, 15, 20, 35, 45, 50, 55, 60, 20Mn, 40Mn, 50Mn

Length: 2M,4M,5.8M,6M,11.8M,12M or as required.

Surface: Black,painted,galvanized...

Samples: Free samples are provided but the fright is borne by the buyer.

Payment Terms: 30% deposit by T/T, the balance against copy of B/L by T/T.

Delivery Time: 7-15 Days

Send email to us Whatsapp

Product Detail

Product Tags

We will be the best choice for customers if we can satisfy our esteemed customers with our high-quality products, favorable price and good service since we are professional and hardworking for China Steel Bar and Rebar, If you are interested in any of our products, or if you have products that you would like us to manufacture, please feel free to send us your inquiries, samples or detailed drawings. At the same time, we are eager to cooperate with you for joint venture and other cooperative projects to grow up as an international enterprise group.

Product Detail

Item	Description
Product Name	Prime Quality Hot Rolled Round Steel Bar / carbon Structural Steel Bar
Material Grades	10#, 20#, 45#, 16Mn, Q195, Q215, Q235, Q345, A53, St37, St42, St35, St52, 08F, 10F, 20Mn, 40Mn, 50Mn, 55#, 60#
Standard	ASTM A53, ASTM A252, ASTM A671, ASME B36.10M, BS EN Standards, GB/T Standards
Steel Grade Range	Carbon Steel, Low Alloy Steel, Structural Steel
Size Range	Diameter: 6mm–600mm (Custom sizes available)
Length	6m, 9m, 12m or customized according to project requirements
Manufacturing Process	Hot Rolled / Cold Drawn / Machined
Surface Treatment	Black Surface, Polished, Galvanized, Anti-Rust Oiled, Painted Coating
Surface Condition	Smooth surface with optional protection treatment for storage and transportation
Tolerance	According to ASTM, EN, and GB standard requirements
Application	Used in construction structures, bridges, machinery manufacturing, automotive parts, shafts, gears, pipelines, and industrial equipment
Features	High strength, good machinability, excellent weldability, reliable performance, and long service life
Packing	Standard export bundles with steel strips, waterproof wrapping, PVC protection, or customized packing
Pipe/Bar End	Plain End, Cut End, Chamfered End, Customized Processing Available
Inspection & Certification	ISO9001, SGS, BV, TUV, Mill Test Certificate (MTC)
Delivery Time	Normally 10–15 days after order confirmation and deposit
Shipping Method	Container, Bulk Vessel, or other export transportation methods

Main Application

application

Building & Civil Engineering
Hot Rolled Round Steel Bars are employed in a variety of applications such as buildings, bridges, highways, and steel piling. Their good impact resistance and high strength combined with a good fatigue strength make them the right choice for the armoring components, supporting structrure and general engineering.

Machinery Manufacturing
Round steel bars are preferred when manufacturing shafts, gears, bolts, pins and other machine components for their inherent machinability and mechanical properties.

Automotive Industry
Used in automotive parts such as axles, drive shafts, suspension pieces and so forth for strength and reliability.

Industrial Equipment & Fabrication
Fabrication of frames, pipelines, machinery, and bespoke steel products. Hot rolled round bars perform confidence for heavy pressure Industrial purpose.

Note:
1.Free sampling, 100% after-sales quality assurance, Support any payment method;
2.All other specifications of round carbon steel pipes are available according to your requirement (OEM&ODM)! Factory price you will get from ROYAL GROUP.

Size Chart

Standard Supply Range:
Diameter: 6mm–600mm
Length: 6m / 9m / 12m / Customized

Available Grades:
10#, 20#, 35#, 45#, Q235, Q345, 16Mn, A36, S235JR, S355JR, and other carbon & alloy steel grades.

Surface Options:
Black Surface / Polished / Galvanized / Anti-Rust Oiled / Painted Coating.


6	28.3	0.222	Small Parts, Bolts & General Fabrication
8	50.3	0.395	Fasteners Machinery Parts
10	78.5	0.617	Construction Machinery Parts, Mechanical Components
12	113.1	0.888	Reinforcement & Fabrication
14	153.9	1.21	Structural Parts Machining
16	201.1	1.58	Shafts & Supports, Engineering Parts
20	314.2	2.47	Machinery and Structural Uses
25	490.9	3.85	Heavy Fabrication Industrial Parts
30	706.9	5.55	Machine Elements Steel Structures
35	962.1	7.55	Equipment Production
40	1256.6	9.87	Shafts Frames Construction
45	1590.4	12.48	Heavy-duty Machinery
50	1963.5	15.42	Industrial Buildings
60	2827.4	22.19	Large Plant and Engineering Work
70	3848.5	30.21	Heavy Structures
80	5026.5	39.46	Machinery & Industrial Applications
90	6361.7	49.94	Large Load Bearing Parts
100	7854	61.65	Heavy Construction and Fabrication
120	11309.7	88.78	Heavy Machinery Infrastructure
150	17671.5	138.72	Heavy Industrial Work
200	31415.9	246.6	Special Engineering Structures

Product Inspection

Packing and Transportation

Usually bare package

Transportation: Express (Sample Delivery), Air, Rail, Land, Sea shipping (FCL or LCL or Bulk)

packing1

FAQ

Q1: Are you a manufacturer or supplier of Hot Rolled Round Steel Bar?
We are an experienced steel supplier with reliable mill resources and years of export experience, offering round steel bars for construction, machinery, and industrial applications.

Q2: What steel grades are available?
We supply carbon steel and alloy steel grades including 10 steel bar, 20#, 45#, Q235, Q345, 16Mn, A36, S235JR, S355JR, and other grades based on customer needs.

Q3: Can you supply customized sizes?
Yes. We provide customized diameters, lengths, surface finishes, and processing services such as cutting and machining.

Q4: How do you control product quality?
Each batch is produced according to required standards and inspected before shipment. We provide Mill Test Certificates (MTC) and support third-party inspections.

Q5: Which standards can your round steel bars meet?
Our products are available according to ASTM, EN, DIN, JIS, and GB standards for different international markets.

Q6: What is the minimum order quantity?
Our standard MOQ is usually 1 ton. Larger orders can receive more competitive prices.

Q7: How are the steel bars packed for shipping?
Products are bundled with steel straps and protected with export-standard packaging to ensure safe delivery during transportation.

Q8: What is the delivery time?
Standard delivery is usually within 10–15 days after order confirmation, depending on quantity and production schedule.

Q9: Do you provide inspection documents?
Yes. We can provide MTC, packing list, certificate of origin, and inspection reports such as SGS or BV when required.

Q10: Why choose Royal Steel Group?
Royal Steel Group provides stable supply, competitive pricing, strict quality control, customized solutions, and professional export service for global steel projects.

Previous: Factory Wholesale Hot Rolled 10 / 10F Carbon Structural Steel Bar

Next: Chinese Supplier Professional 20Mn 40Mn 50Mn Hot Rolled Carbon Structural Steel Round Bar