- Introduction
 - Classification and code
 - Similar grades
 - For specification
 
Structural steel generally have high strength and good formability, usually through a simple process to withstand external loads. , Structural steel products with reliable performance, good formability, excellent welding performance characteristics of its products are mainly referring ...
	
	
| 
					 Standard No.  | 
				
					 
						Q/BQB  | 
				
					 DIN1614-2-86  | 
				
					 EN111-77  | 
				
					 
						EN10111-2008  | 
				
					 JIS G3131-2005  | 
				
					 
						GB/T710-2008  | 
			
| 
					 
 Grades  | 
				
					 DD11 SPHC  | 
				
					 StW22  | 
				
					 Fep11  | 
				
					 DD11  | 
				
					 SPHC  | 
				
					 08  | 
			
| 
					 DD12 SPHD  | 
				
					 RRStW23  | 
				
					 Fep12  | 
				
					 DD12  | 
				
					 SPHD  | 
				
					 08  | 
			|
| 
					 DD13 SPHE  | 
				
					 StW24  | 
				
					 Fep13  | 
				
					 DD13  | 
				
					 SPHE  | 
				
					 08  | 
			|
| 
					 DD14 SPHF  | 
				
					 -  | 
				
					 -  | 
				
					 DD14  | 
				
					 SPHF  | 
				
					 -  | 
			|
| 
					 BRC1、BRC2、BRC3  | 
				
					 -  | 
				
					 -  | 
				
					 DD14  | 
				
					 SPHF  | 
				
					 -  | 
			
Structural steel Welding structural steel Structural steel
| 
				 Q/BQB 303-2009  | 
			
				 JIS G3101:2004  | 
			
				 
					GB912-89/GB3274-88  | 
		
| 
				 SS330  | 
			
				 SS330  | 
			
				 Q195,Q215A,15  | 
		
| 
				 SS400  | 
			
				 SS400  | 
			
				 Q235A,Q255A  | 
		
| 
				 SS490  | 
			
				 SS490  | 
			
				 Q275A  | 
		
| 
				 SS540  | 
			
				 SS540  | 
			
				 -  | 
		
| 
				 Q/BQB 303-2009  | 
			
				 DIN17100-80  | 
			
				 EN10025:1990  | 
			
				 EN10025-2:2004  | 
			
				 GB 912-2008/GB 3274-2007  | 
		
| 
				 S185(St33)  | 
			
				 St33  | 
			
				 Fe310-0  | 
			
				 S185  | 
			
				 Q195、Q215A  | 
		
| 
				 S235JR(St37-2)  | 
			
				 St37-2,RSt37-2  | 
			
				 Fe360B  | 
			
				 S235JR  | 
			
				 Q235B  | 
		
| 
				 S235J0(ST37-3)  | 
			
				 St37-3  | 
			
				 Fe360C  | 
			
				 S235J0  | 
			
				 Q235C  | 
		
| 
				 S235J2  | 
			
				 -  | 
			
				 Fe360D  | 
			
				 S235J2  | 
			
				 Q235D  | 
		
| 
				 S275JR(St44-2)  | 
			
				 St44-2  | 
			
				 Fe430B  | 
			
				 S275JR  | 
			
				 Q255B  | 
		
| 
				 S275J0  | 
			
				 St44-3  | 
			
				 Fe430C  | 
			
				 S275J0  | 
			
				 Q255C  | 
		
| 
				 S275J2  | 
			
				 -  | 
			
				 Fe430D  | 
			
				 S275J2  | 
			
				 Q255D  | 
		
| 
				 E295(St50-2)  | 
			
				 St50-2  | 
			
				 Fe490-2  | 
			
				 E295  | 
			
				 Q345A  | 
		
| 
				 S355JR  | 
			
				 -  | 
			
				 Fe510B  | 
			
				 S355JR  | 
			
				 Q345B  | 
		
| 
				 S355J0(St52-3)  | 
			
				 St52-3  | 
			
				 Fe510C  | 
			
				 S355J0  | 
			
				 Q345C  | 
		
| 
				 S355J2  | 
			
				 -  | 
			
				 Fe510D  | 
			
				 S355J2  | 
			
				 Q345D  | 
		
| 
				 S355K2  | 
			
				 -  | 
			
				 Fe510DD  | 
			
				 S355K2  | 
			
				 Q345E  | 
		
| 
				 Q/BQB 303-2009  | 
			
				 JIS G3106:2004  | 
			
				 GB912-2008/GB3274-2007  | 
		
| 
				 SM400A  | 
			
				 SM400A  | 
			
				 Q235A.Q235B  | 
		
| 
				 SM400B  | 
			
				 SM400B  | 
			
				 Q235C  | 
		
| 
				 SM400C  | 
			
				 SM400C  | 
			
				 Q235D  | 
		
| 
				 SM490A  | 
			
				 SM490A  | 
			
				 Q345A.Q345B  | 
		
| 
				 SM490B  | 
			
				 SM490B  | 
			
				 Q345C  | 
		
| 
				 SM490C  | 
			
				 SM490C  | 
			
				 Q345D  | 
		
| 
				 SM490YA  | 
			
				 SM490YA  | 
			
				 Q390B  | 
		
| 
				 SM490YB  | 
			
				 SM490YB  | 
			
				 Q390C  | 
		
| 
				 SM520B  | 
			
				 SM520B  | 
			
				 Q420A.Q420B  | 
		
| 
				 SM520C  | 
			
				 SM520C  | 
			
				 Q420C  | 
		
| 
				 SM570 BSM590  | 
			
				 SM570  | 
			
				 Q460C.Q460D  | 
		
| 
				 B590GJA,B590GJB  | 
			
				 -  | 
			
				 Q460C.Q460D  | 
		
| 
				 Q/BQB 303-2009  | 
			
				 DIN1702-80  | 
			
				 EU113-72  | 
			
				 EN10113-2:1993  | 
			
				 EN10025-3:2004  | 
			
				 
					GB 912-2008  | 
		
| 
				 StE255  | 
			
				 StE255  | 
			
				 FeE255KGN  | 
			
				 -  | 
			
				 -  | 
			
				 Q235C、Q235D  | 
		
| 
				 StE285  | 
			
				 TStE285  | 
			
				 FeE275KTN  | 
			
				 S275N  | 
			
				 S275N  | 
			
				 Q275C、Q275D  | 
		
| 
				 StE355  | 
			
				 StE355  | 
			
				 FeE355KGN  | 
			
				 S355N  | 
			
				 S355N  | 
			
				 Q345C、Q345D  | 
		

