Product Description
Carbon steel bar is a type of solid long steel commonly available in round, square, hexagonal, and octagonal shapes. Round bars are typically used in the production of steel rods, bolts, and various mechanical components, as well as billets for seamless steel pipes. Square bars are steel materials processed or rolled into square sections, which can be classified into hot-rolled and cold-rolled types.
Grade | Level | Chemical Composition,% | Deoxygenation Method | Use | ||||
C | Mn | Si | S | P | ||||
No greater than | ||||||||
Q195 | - | 0.06~0.12 | 0.25~0.50 | 0.30 | 0.050 | 0.045 | F、b、Z | General bridges, building structures, general mechanical parts, such as screws, nuts, etc. |
Q215 | A | 0.09~0.15 | 0.25~0.55 | 0.30 | 0.050 | 0.045 | F、b、Z | |
B | 0.045 | |||||||
Q235 | A | 0.14~0. 22 | 0.30~0.65 | 0.30 | 0.050 | 0.045 | F、b、Z | |
B | 0.12~0.20 | 0.30~0.70 | 0.045 | |||||
C | ≤ 0.18 | 0.35~0.80 | 0.040 | 0.040 | Z | |||
D | ≤ 0.17 | 0.035 | 0.035 | TZ | ||||
Q255 | A | 0.18~0.28 | 0.40~0.70 | 0.30 | 0.050 | 0.045 | F、b、Z | It can be used for mechanical parts with large force, such as sprockets, tie rods, etc. |
B | 0.045 | |||||||
Q275 | - | 0.28~0.38 | 0.50~0.80 | 0.35 | 0.050 | 0.045 | b、Z | |
Carbon steel round bar is a solid long steel bar featuring a circular cross-section, with specifications typically measured by diameter in millimeters (mm). Based on the manufacturing process, round bars are categorized into hot-rolled, forged, and cold-drawn types. According to chemical composition (carbon content), they are divided into low, medium, and high carbon steel grades. By steel quality, they can be classified as ordinary or high-quality carbon steel round bars. Depending on their application, they are further divided into carbon structural steel and carbon tool steel.
Carbon steel square steel is a solid long strip of steel with a square cross-section. Square steel is made from steel ingots, billets or steel through pressure processing. Square steel can be divided into two types: hot-rolled and cold-rolled; hot-rolled square steel refers to steel that is rolled or processed into a square section. Square steel is generally used in light steel structures, such as steel roof trusses, civil housing skeletons, etc.
The difference between round steel and other steel bars:
Appearance: Round steel features a smooth surface without patterns or ribs, while other steel bars have ribbed or textured surfaces. As a result, round steel has a weaker bonding force with concrete, whereas ribbed bars provide stronger adhesion.
Composition: Round steel (Grade 1 steel) is typically made of ordinary low-carbon steel, while most other steel bars are produced from alloy steel.
Strength: Round steel has lower tensile strength compared to other steel bars of the same diameter. However, it offers greater plasticity and deformation capacity before breaking, while other steel bars are stronger but less ductile.
FAQ：
Q: What kind of work does your company do?
A: We are a business steel industry and trade. We mainly produces carbon steel plate /pipe /coil/ bars/ rebar /structure, etc.
Q: What are the advantages of your company?
A: (1): Prime quality and Competitive price.
(2): Excellent experiences with after-sale service.
(3): Every process will be checked by responsible QC which insures every product's quality.
(4): Professional packing teams which keep every packing safely.
(5): Samples can be provided as your requirements.
Q: What is your terms of payment ?
A: Can be negotiated by both parties. If you have another question, pls feel free to contact us as below.
Q: What about your price?
A: Our price is very competitive.
Pls feel free to contact us if you are interested in our products.
Q: How long is your delivery time?
A: Stock steel/Steel for simple cutting/Small amount of general standard steel: about 5-20 days for delivery; Custom steel/bulk steel: about 15-30 days for delivery. Contact us for specific delivery times.
