| Customization: | Available |
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| After-sales Service: | Video Technical Support |
| Warranty: | 50 Years |
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Round steel is divided into three types: hot-rolled, forged and cold-drawn. The specifications of hot-rolled round steel are 5.5-250 mm. Among them: 5.5-25 mm small round steel is mostly supplied in bundles of straight bars, and is often used as steel bars, bolts and various mechanical parts; round steel larger than 25 mm is mainly used to manufacture mechanical parts, seamless steel pipe billets, etc.
Classification by chemical composition
Carbon steel can be divided into low carbon steel, medium carbon steel and high carbon steel according to its chemical composition (i.e. carbon content).
(1) Low carbon steel
Also known as soft steel, the carbon content ranges from 0.10% to 0.30%. Low carbon steel is easy to accept various processing such as forging, welding and cutting, and is often used to manufacture chains, rivets, bolts, shafts, etc.
(2) Medium carbon steel
Carbon steel with a carbon content of 0.25% to 0.60%. There are many products such as killed steel, semi-killed steel, boiling steel, etc. 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. It has good hot processing and cutting performance, but poor welding performance. It has higher strength and hardness than low carbon steel, but lower plasticity and toughness than low carbon steel. It can be used directly as hot-rolled or cold-drawn material without heat treatment, or it can be used after heat treatment. Medium carbon steel has good comprehensive mechanical properties after quenching and tempering. The highest hardness that can be achieved is about HRC55 and HB538, and σb is 600-1100MPa. Therefore, in various uses with medium strength levels, medium carbon steel is 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 steel
Commonly known as tool steel, it has a carbon content ranging 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%.
| Product Name | Round Steel | |||
| Standard | GB699-1988,GB700-1988,GB3077-1988,GB702-1986,QJ/HG02.17-1991,ASTM A29,A108,A321,A575,BS970,DIN1652,JIS G4051 | |||
| Material | 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 |
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| Outside Dia | 8mm-650mm or As Your Request | |||
| Length | 1000-12000mm/customized | |||
| Technology | Hot Rolled/Cold Drawn/Forged | |||
| Shape | Round | |||
| Application | Widely used in furniture,interior decoration, fluid pipeline, petroleum and natural gas industry, drilling, pipeline, structure | |||
| Delivery time | 8-14 days after receipt of deposit | |||
| Payment | T/T, L/C at sigth. | |||
| Package | Standard export package,such as wooden box or as required. | |||
Q1: What is your MOQ?
A: Usually our MOQ is one container, but it is different for some items, please contact us for details.
Q2:What is your terms of payment?
A:We usually accept T/T in advance, L/C for large sum.If you prefer other payments terms, please discuss.
Q3:What is your delivery time?
A:For products in stock, we can ship it within 7 days after receiving the deposit. For custom order, production time is 15-30 workdays after received the deposit.
Q4:How could you guarantee your products?
A:Mill Test Certification is supplied with shipment, We also accept and support the third-party inspection.We also could issue the warranty to customer to guarantee the quality.
Q5: Will all costs be clear?
A:Our quotation is easy to understand and will not incur any additional costs.
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