Round bar

Round steel bar is divided into hot rolling, forging and cold drawing. The specification of hot rolled round steel bar here talked is 20-250mm. The Round steel bar is mainly used for manufacturing mechanical parts, pipe blank of seamless steel pipe, etc.

ROYAL industry can supply the following types of round steel bars:

High quality carbon structural steel bar
Application of High quality carbon structural steel bar: Used to make shafts, connecting rods, crankshafts, crankpins, gears, rolls, slewing bearings and valve bodies of machinery, hydraulic pressure, machine tools, ships, lifting equipment ,etc.

Typical Grade	Sizes	Specifications / Standards
S10C~S58C S09CK~S20CK	Ф20～350	JIS G4051
1008-1080		ASTM/SAE
C22~C60		DIN

 
Low alloy high strength steel bar
Application of Low alloy high strength steel bar:Used to make mechanical parts, gear shaft, hot work mold, valve body, pressure vessel, roller sleeve, etc.

Typical Grade	Sizes	Specifications / Standards
S235JR/J0/J2,S275JR/J0/J2,S355JR/J0/J2	Ф20～350	EN 10025
A572 Gr.50/60		ASTM A572
SS490,SS540		JIS 3101

 
Structural alloy Steel bar
Application of Structural alloy Steel bar: Used to make shafts, gears, connectors and structural parts of mining machinery, engineering machinery, petroleum machinery, hydraulic pressure, machine tools, automobiles, lifting equipment, etc.

Typical Grade	Sizes	Specifications / Standards
SNC236~SNC836	Ф20～350	JIS G4102
SNCM220~SNCM815		JIS G4103
SCr415~SCr445		JIS G4104
SCM415~SCM822		JIS G4105
SMn420~SMn443		JIS G4106
22Mn6~42Mn6, 20Cr4-41Cr4, 18CrMo4-42CrMo4, 20CrMnMo~40CrMnMo, 20CrMoAl~40CrMoAl, 20CrNiMo～40CrNiMo		ISO 643/DIN
AISI4130,AISI4140,AISI4137H , AISI4145H,AISI4340,AISI8630 LF6		ASTM A29

 
Tube billet steel bar
Application of tube billet steel bar: Used to make steel pipes for oil exploitation, natural gas transmission, thermal power generation and other industrial fields.
 

Typical Grade	Sizes	Specifications / Standards
J55,N80,P110,L80,C90,T95	Ф20～350	API 5CT
A,B,X42,X46,X52,X56,X60		API 5L
E-75,X-95,G-105,S135		API 5D
A106 Grade A/B/C,A161,A179,A192,A209,A210,A213		ASTM
SCr420TK,		JIS G3441
SCM415TK~SCM440TK		JIS G3445
STKM11A/B/V-STKN19A/B/C		JIS G3452
SGP		JIS G3454
STPG370,STPG410		JIS G3456
STPT370~STPT480		JIS G3461
STBP340~STPT51C  STC370~STC590B		JIS G3473
ST37.4,ST44.4,ST52.4		DIN 1629
ST30Si,ST30Al,ST35,ST45,ST52		DIN 1630
ST35.8,ST45.8,17Mn4,19Mn5,		DIN 17175
15Mo3,13CrMo44,19CrMo910,14MoV63.		EN10210

 
 Grinding ball steel bar
Application of Grinding ball steel bar: Used to make grinding balls in metallurgy, mining, cement and other fields.

Typical Grade	Sizes	Specifications / Standards
B2 B3 S550A	Ф20～120	Technical protocol
S550C S650A
S-704 S-901 R25
XK5062 XK5095
X2K5170 XK51105
X3K5140H

 
Gear steel round bar
Application of Gear steel round bar: Used to make gear parts of automobile, wind power and various machinery industries.

Typical Grade	Sizes	Specifications / Standards
4153H~4340H	Ф20～350	ASTM A304
SAE8620		SAE
28Cr4H,16MnCr5H,20MnCr5H,		EN 10084
17CrNi6-6H,18CrNiMo7-6H
SCr415H,SCr420H,SCM415H~SCM440H		JIS G4052
C45E4H,20Cr4H,41Cr4H,41Cr4EH,		ISO 683-3
18CrMo4H,20NiCrMo2H

 
Bearing steel round bar  
Application of Bearing steel round bar: Used to make Rolling elements and rings.

Typical Grade	Sizes	Specifications / Standards
S1100,Cr1,S2100,M50,4118H,8620H,4320H,9310H	Ф20～200	ASTM
SUJ1,SUJ2,SUJ3,SNCM220,SNCM420		JIS
100Cr6,100CrMn6		DIN

 
Axle steel round bar
Application of Axle steel round bar: Used to make axles of railway passenger and freight cars, subways, light rail and other rail transit vehicles.
 

Typical Grade	Sizes	Specifications / Standards
EA1N	250*250	EN 13261
AAR M-101F	280*280	AAR M-101