Hot rolled steel round bar

Round 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.

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PRODUCT DETAILS

With round steel having a circular cross-section , low carbon round are essential raw materials for the production of various metal products.

Meanwhile, medium carbon round steel are typically utilized in the fabrication of mechanical structural components due to their strength and durability. Overall, round 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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Steel Round Bar