| Steel Grade | 
                                                Executive Standard | 
                                            
                                            
                                                | 12Mn, 16Mn 15MnV, 15MnVN 14MnNb | 
                                                GB3274-88 | 
                                            
                                            
                                                | Q295(A, B),  | 
                                                GB/T1591-94 | 
                                            
                                            
                                                | Q345(A, B, C, D, E)≤100mm | 
                                                GB/T1591-94 | 
                                            
                                            
                                                | Q345(A, B, C, D, E)≥ 102mm | 
                                                Q/WTB8 - 2000 | 
                                            
                                            
                                                | Q390(A, B, C, D, E) Q420(A, B, C, D, E) Q460(C, D, E) | 
                                                GB/T1591-94 | 
                                            
                                            
                                                | Q500(D, E), Q550(D, E), Q620(D, E), Q690(D, E) | 
                                                GB/T16270 | 
                                            
                                            
                                                | SM490(A, B, C), SM490Y(A, B) SM520(B, C), SM570 | 
                                                JIS G3106 | 
                                            
                                            
                                                | SS490, SS540 | 
                                                JIS G3101 | 
                                            
                                            
                                                | St44-3, St52-3, St50-2 St60-2, St70-2 | 
                                                DIN17100 | 
                                            
                                            
                                                | StE315, StE355, StE380 StE420, StE460, StE500 | 
                                                DIN17102 | 
                                            
                                            
                                                | A572M(Gr42, 50, 60, 65) A633M(A, C, D, E) | 
                                                ASTM | 
                                            
                                            
                                                | S275(JR, J0, J2G3, J2G4) S355(JR, J0, J2G3, J2G4, K2G3, K2G4) E295, E335, E360 | 
                                                EN10025 | 
                                            
                                            
                                                | S275N, S275NL, S355N, S355NL S420N, S420NL, S460N, S460NL | 
                                                EN10113 | 
                                            
                                            
                                                | 50(A, B, C, D, DD, EE, F) 43(A, B, C, D, EE), 55(C, EE, F) | 
                                                BS4360 | 
                                            
                                            
                                                | WH60(A, B, C, D, E), | 
                                                WJX013-2001 | 
                                            
                                            
                                                | WH70 | 
                                                WYJ060-2000 | 
                                            
                                            
                                                | WH80 | 
                                                WYJ002-2002 | 
                                            
                                            
                                                | WH410LK(BB41BF) WH490LK(BB503) | 
                                                special purpose and condition | 
                                            
                                            
                                                | E355(DD, E), E460(CC, DD, E) | 
                                                ISO4950-2 | 
                                            
                                            
                                                | E420(DD, E), E460(DD, E) E550(DD, E) High-strength low-alloy (HSLA) | 
                                                ISO4950-3 | 
                                            
                                            
                                                | Fe430(A, B, C, D) Fe510(B, C, D) | 
                                                ISO630 |