Hot rolled steel round bar
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Keywords: Zerchen Energy
Round steel and square steel are both types of carbon structural steel widely used in construction and machinery. Round steel is predominantly used for drawing wire, forging rivets, bolts, nuts, and other metal products. On the other hand, square steel is commonly employed in machinery applications.
These two types of steel are characterized by their simple section shapes, with round steel having a circular cross-section and square steel featuring a square cross-section. In particular, low carbon round and square steel are essential raw materials for the production of various metal products.
Meanwhile, medium carbon round steel and square steel are typically utilized in the fabrication of mechanical structural components due to their strength and durability. Overall, round steel and square steel play crucial roles in a wide range of industrial applications, serving as fundamental building blocks for the construction and machinery sectors.
Category | Grade | Size | Implementation Standards | Application | Remark |
High quality carbon structural steel | 20~45, 50Mn,S15~55C, S20C,S35C,S45C,C45,C50,SAE1045 1015,A105,Cf53,UC1; S235JR,S235J0,S235J2 S355JR,S355J0,S355J2 |
φ16~φ350 | GB/T 699,JIS G4051, EN10083-2,ASTM A29, Technical aggrement for supply Technical protocol | Used for making all kinds of shafts, connecting rods, crankshafts, crank pins, gears, rotary supports, valve bodies and fasteners of automobiles, engineering machinery and other machinery. For Manufacturing of All Kinds of Bearing Parts, Screw, Connecting Rod, Rigging, Metal Tools, etc. | |
Q355 series LF2, LF6, S355J2 series S355NL series | Q355 LF2 S355J2 | Ф20~350 | GB/T 1591 EN 10025 EN 10021 Technical protocol | Used for making structural parts such as equipment connectors, shafts, valve bodies,etc. Of machinery, petroleum, water conservancy, shipbuilding, construction and other fields. | |
Structural alloy Steel/Alloy structure steel | 20-45Mn2,20-45Cr 15-42CrMo,40CrMnMo,38CrMoAI,20-40CrNiMo,42-50CrMo4,B7,SCM415-440,SNCM431,AISI4130,AISI4140, AISI4137H,AISI4145H,AISI4340, AISI8630 | Ф16~Ф350 | GB/T 3077 JIS G4053 EN 10083-3 ASTM A29 Q320582 JYG22 Technical protocol | Used for making structural parts such as shafts, connecting rods, gear wheels, etc. of wind driven generater, mining machinery, engineering machinery, petroleum machinery, machine tools, automobiles and lifting equipment. | |
Tube billet steel | 20G,15CrMoG,12Cr2MoG, 12CrlMoVG,10Cr9MolVNbN, SA-210C, Tla,Til,T12, T22,T5,WB36,T91, 25CrMo, 30CrMo,4130,34CrMo4, 15NilMnMoNbCu,10Cr9MolVNbN, CB770, CB89027CrMo-F,ZD135, 33Mn2V,36Mn2V,22Cr3MoTi, 29CrMoVNb | Ф20~Ф300 | YB/T 5137 GB 30584 API 5CT ASME SA-213/SA-213M ASTM A335/A335M Technical protocol | Used for making steel pipes in oil exploitation, natural gas transmission, crane boom, thermal power generation, high-pressure gas cylinders, mechanical structures and other fields. | Carbon steel round pipe billet; Alloy structure round pipe billet; High pressure smls pipe billet |
Grinding ball steel | B2 B3 B250A B300A B350A B400A S550A S550C S650A S-704 S-901 | Ф20~120 | Technical protocol | Used for making grinding balls in metallurgy, mining, cement and other fields. | |
Gear steel/Gearing steel | 20CrMnTiH,22CrMoH(SCM822H), 20CrMnMoH,20CrNiMoH,16-28MnCr5H,18CrNiMo7-6H, SCM420H, SAE8620H,TL4227H,45H,15CrH~45CrH,42CrMoH,16CrMnH,15CrMnBH,40MnBH,20MnVBH,20MnTiBH,SCr420H | Ф20~350 | GB/T 5216 EN 10084 ASTM A304 Technical agreement for supply Technical protocol | Used for making gear wheels of automobiles, wind power, engineering machinery and other fields. |
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APPLICATION AREAS

Petroleum

Marine Exploration

Coal Mine

Architectural Engineering

Electric Field

Boiler Field

Field of chemical industry

Textile Field
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