Name: Carbon Steel Round Bar
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Carbon Steel Round Bar

Round steel is actually very common in life, but some people don't pay much attention to these. Round steel is actually a long strip of solid steel with rounded ends. Round bars are often used in the manufacture of large-scale manufacturers.

Contact：Samantha Z

Phone：+8613583116312

Whatsapp/Wechat：+8613583116312

Email： google@s-materialgroup.com

Address: Yingsheng Steel Market, Fengnan District, Tangshan City, Hebei Province

Product Specifications

Product Details

Our company has been producing round steel for many years, and has cooperated with many countries in the world. The cooperation with customers praises our products for good quality and low price. Customers say that we are a trustworthy company. Next I will introduce carbon steel round bars. Round steel is actually very common in life, but some people don't pay much attention to these. Round steel is actually a long strip of solid steel with rounded ends. Round bars are often used in the manufacture of large-scale manufacturers. It is usually used to make machined parts, rebar or as seamless steel pipe billets (the blanks used to produce seamless steel pipes). Its specifications are expressed in diameter in millimeters (mm), such as "50mm", which means round steel with a diameter of 50 mm. The appearance of the round steel is relatively smooth and round, without grain, so the adhesion force of such round steel to concrete is relatively small. The strength of the round steel is very low, and the tensile force it bears is smaller, but the plasticity of the round steel is stronger than that of the round steel. Round steel is usually divided into hot rolled round steel, forged round steel and cold drawn round steel. Hot rolled round bars are available in sizes from 5.5 to 250 mm in diameter. Hot rolled round steel is usually used in construction and general hardware processing. Forged round bars are suitable for sizes from 50 to 250 mm in diameter or side length. Forged round bars are usually used in the manufacture of mechanical parts. Cold-drawn round steel is suitable for sizes ranging from 3 to 100 mm in diameter. Cold-drawn round steel is mainly used in hardware accessories processing, standard accessories, textile machinery, light industrial hardware and other processing occasions. Cold-drawn round steel is a round steel with high precision after "cold drawing" treatment, which can be directly used as a bearing.

Item	Carbon Steel Bars
Standard	GB/T 700-2006, GB/T 1591-94, JIS G3101-2004, ASTM A36/A36M-05, ASTM A242/A242M-04, ASTM A529/A529M-05, ASTM A572/A572M-06 etc.

Material	Q195, Q215 A, Q215 B, Q235 A, Q235 B, Q235 C, Q235D, Q275, Q275B, Q275C, Q275D, Q295, Q345, Q390, Q420, Q460, SS330, SS400, SS490 etc.



Diameter	4mm~800mm
Length	1m, 3m, 5.8m, 6m, 12m or as required
Surface	Polished, bright, black, coated
Package	Standard export seaworthy or as customers' requirements
Export	Ireland, Singapore, Indonesia, Ukraine, Saudi Arabia, Spain, Canada, USA, Brazil, Thailand, Iraq, Russia, Holland, Turkey, Kuwait,
Price terms	EXW, FOB, CFR, CIF
Payment terms	T/T., LC at Sight, LC at 90 Days, D/P, O/A
Delivery time	7-10 days, upon the final quantity you demand

Product Category:

1.Classification by chemical compositionCarbon steel can be divided into low carbon steel, medium carbon steel and high carbon steel according to chemical composition (that is, carbon content).(1) Low carbon steelAlso known as mild steel, low carbon steel with carbon content from 0.10% to 0.30% is easy to accept various processing such as forging, welding and cutting, and is often used in the manufacture of chains, rivets, bolts, shafts, etc.(2) Medium carbon steelCarbon steel with a carbon content of 0.25% to 0.60%. There are killed steel, semi-killed steel, boiling steel and other products. In addition to carbon, it can also contain a small amount of manganese (0.70% to 1.20%). According to product quality, it is divided into ordinary carbon structural steel and high-quality carbon structural steel. Good thermal processing and cutting performance, poor welding performance. The strength and hardness are higher than those of low carbon steel, while the plasticity and toughness are lower than those of low carbon steel. Hot-rolled and cold-drawn materials can be used directly without heat treatment, or they can be used after heat treatment. The quenched and tempered medium carbon steel has good comprehensive mechanical properties. The highest hardness that can be achieved is about HRC55 (HB538), and σb is 600-1100MPa. Therefore, among various uses of medium strength level, medium carbon steel is the most widely used, in addition to being used as a building material, it is also widely used in the manufacture of various mechanical parts.(3) High carbon steelOften called tool steel, it has a carbon content from 0.60% to 1.70% and can be hardened and tempered. Hammers, crowbars, etc. are made of steel with a carbon content of 0.75%; cutting tools such as drills, taps, reamers, etc. are made of steel with a carbon content of 0.90% to 1.00%.2. Classification by steel qualityAccording to the quality of steel, it can be divided into ordinary carbon steel and high-quality carbon steel.(1) Ordinary carbon structural steel, also known as ordinary carbon steel, has wide restrictions on carbon content, performance range and content of phosphorus, sulfur and other residual elements. In China and some countries, it is divided into three categories according to the guaranteed conditions of delivery: Class A steel (Class A steel) is steel that guarantees mechanical properties. Type B steels (Type B steels) are steels with guaranteed chemical composition. Special steel (C-type steel) is a steel that guarantees both mechanical properties and chemical composition, and is often used to manufacture more important structural parts. China produces and uses the most A3 steel with a carbon content of about 0.20% (Class A No. 3 steel), which is mainly used for engineering structures.Some carbon structural steels also add a small amount of aluminum or niobium (or other carbide-forming elements) to form nitride or carbide particles to limit grain growth, strengthen the steel, and save steel. In China and some countries, in order to meet the special requirements of professional steel, the chemical composition and properties of ordinary carbon structural steel have been adjusted, and a series of professional steels of ordinary carbon structural steel (such as bridges, buildings, steel bars, steel for pressure vessels, etc.).(2) Compared with ordinary carbon structural steel, high-quality carbon structural steel has lower content of sulfur, phosphorus and other non-metallic inclusions. According to the different carbon content and use, this kind of steel is roughly divided into three categories:① Less than 0.25% C is low carbon steel, especially 08F, 08Al with carbon content less than 0.10%, etc., which are widely used as deep drawing parts such as automobiles and cans because of their good deep drawing and weldability ets. 20G is the main material for making ordinary boilers. In addition, low carbon steel is also widely used as carburizing steel for machinery manufacturing.②0.25～0.60%C is medium carbon steel, which is mostly used in the quenched and tempered state to make parts in the machinery manufacturing industry.③More than 0.6%C is high carbon steel, which is mostly used in the manufacture of springs, gears, rolls, etc.According to the different manganese content, it can be divided into ordinary manganese content (0.25-0.8%) and higher manganese content (0.7-1.0% and 0.9-1.2%) two steel groups. Manganese can improve the hardenability of steel, strengthen ferrite, and improve the yield strength, tensile strength and wear resistance of steel. Usually, "Mn" is added after the grade of steel with high manganese content, such as 15Mn, 20Mn, to distinguish it from carbon steel with normal manganese content.3. Classification by useAccording to the use, it can be divided into carbon structural steel and carbon tool steel.(1)Carbon tool steel The carbon content is between 0.65 and 1.35%. After heat treatment, high hardness and high wear resistance can be obtained. It is mainly used to manufacture various tools, cutting tools, molds and measuring tools (see tool steel).(2)Carbon structural steel is divided into 5 grades according to the yield strength of steel:Q195, Q215, Q235, Q255, Q275、Q195、Q235、10#、20#、35#、45#、Q215、Q345、12Cr1Mov、15CrMo、304、316、20Cr、40Cr、20CrMo、35CrMo、42CrMo、40CrNiMo、GCr15、65Mn、50Mn、50Cr、3Cr2W8V、20CrMnTi、5CrMnMo....

Application

Hot rolled round steel is usually used in construction and general hardware processing. Forged round bars

are usually used in the manufacture of mechanical parts. Cold-drawn round steel is mainly used in

hardware accessories processing, standard accessories, textile machinery, light industrial hardware and

other processing occasions. Cold-drawn round steel is a round steel with high precision after "cold drawing"

treatment, which can be directly used as a bearing.

FAQ

1..Q: Can I get samples before placing an order?

A: Yes, of course. Usually our samples are free. We can produce according to your samples or technical

drawings.

2. Q: When is your delivery time?

A: Our delivery time is about one week, and the time depends on the number of customers.

3.Q: What are your payment terms?

A: Our usual payment methods are T/T, L/C, D/A, D/P, Western Union, MoneyGram, payment methods

can be negotiated and customized collaborate with clients.

4. Q: What has your factory done in quality control?

A: We have obtained ISO, CE and other certifications. From material to product, we check every process

to maintain good quality.

5. Q: How do you make sure that what I get is good?

A: We accept all third-party inspections and support you to inspect your goods at any time. If the goods

are unqualified, you can reject this batch of goods.

6. Q: How do you keep our business in good long-term relationship?

A: We maintain good quality and competitive price to ensure the interests of our customers; we respect

every customer as our friend, we do business with them sincerely and make friends. no matter where

they come from.

7.Q: What is the minimum order quantity?

A: The minimum order quantity is 1 ton, which can be customized according to customer requirements.

8. Q: How can we trust your company?

A: We have been focusing on the steel business for many years, headquartered in Jinan City, Shandong

Province, you are welcome to visit our company and factory at any time. We also sincerely invite all

customers to conduct video conferences.

Online Consultation

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