| No | Category | Grade | Sizes | Specifications / Standards | Application |
| 1 | | A105、S20Cr、25、45、C45E、C45R、C45RCr、S45CB、S45Cr、S45Ti | Φ75～350 | EN10083-2 | |
| Carbon constructional steel | Technical protocol | Widely used to produce heavy load crankshafts, connecting rods, crank pins, gears, rollers, etc. |
| 2 | | Q345B、Q345E、A350LF2、S355J2 | φ75～350 | GB/T1591 | |
| Low alloy high strength steel | YB/T4149 | Used in mechanical processing, petroleum, water conservancy, wind power, construction and other industries. |
| EN10025 | |
| EN10021 | |
| EN ISO 14284 | |
| JIS G3106 | |
| ISO 148-1 | |
| JB/T4730.3 | |
| 3 | | 15CrMo-20CrMo、30-42CrMo、20-45Cr、38CrMoAl、37CrMnMo-40CrMnMo、20CrNiMo、40CrNiMo、20Ni4Mo、34Cr2Ni2Mo、30Cr2Ni2Mo、SCM440、SCM420、AISI4130、ASTM4130A、AISI8630、AISI4145H、LF6、20Mn2、SNCM431、42CrMoSZG | Ф75～350（160～350）×（160～350） | GB/T 6396 | |
| Structural alloy steel | ASTMA29/A29M | Making axle, gear, attaching parts and construction parts of automotive, mining machines, engineering machines, machine tools, lifting equipment , etc. |
| JIS G4053 | |
| EN10083-3 | |
| 4 | | X52、X65QS、12Mn4V/1、30CrMo、20G、SA106B/C、15CrMoG、12CrMoVG、P11、P22、P91 | φ75～350 | API5L | |
| Tube blank steel | YB/T4149 | Mainly used in petroleum extraction, natural gas transmission, thermal power and other industrial fields. |
| GB/T3087 | |
| GB/T5310 | |
| SA106 | |
| ASME SA210 | |
| ASME SA213 | |
| ASME SA335/SA335M | |
| 5 | | R25、S-704、X2K5170、XK5062、XK5095、XK51105、X3K5140H | Φ75～100 | | |
| Grinding ball steel | Technical protocol | Mainly used in the ball grinder crusher used in metallurgy, mining, cement, electric power, etc. |
| 6 | | 20CrMnTi（H）、20CrMnMo、16MnCr5、18CrNiMo7-6、（17CrNiMo6）、8620 | Ф75～350 | GB/T 3077 | |
| Gear steel | GB/T 5216 | Widely used in automotive, wind power, and kinds of engineering machinery industry. |
| EN 10084 | |
| ASTM A29/A29M | |
| | |
| Technical protocol | |
| 7 | | GCr15、SAE52100、100Cr6、GCr15SiMn、GCr18Mo | Φ75～210 | GB/T 18254 | |
| Bearing steel | | Forging round, electroslag refining. |
| Technical protocol | |
