| 序号 No |
钢种大类 Category |
典型牌号 Grade |
规格（mm） Specifications |
执行标准 Standard |
主要用途 Application |
| 1 | 优质碳素结构钢 High quality carbon structural steel |
20～45 50Mn A105 1045 C45E S45Cr S48C |
Φ380～1200 | GB/T699 JIS G4051 技术协议 Technical protocol |
用于制作机械、液压、船舶等设备的轴、曲轴、连杆、齿轮、阀体、轧辊等部件。 Used for making shafts, crankshafts, connecting rods, gears, valve bodies, rolls,etc. of machinery, hydraulics, ships,etc. |
| 2 | 低合金高强度钢 Low alloy high strength steel |
Q355系列 S355NL系列 LF2 LF6 S355J2系列 R16MnH 16Mn | Φ380～1200 | GB/T 1591
JB 4726
EN1 0025 技术协议 Technical protocol |
用于制作机械、石油、水利、风电、建筑等领域的法兰、阀门、压力容器等。 Used for making flange, valves, pressure vessels, etc. of machinery, petroleum, water conservancy, wind power, construction and other fields. |
| 3 | 合金结构钢 Structural alloy steel |
12Cr2Mol 14CrlMo 1542CrMo 37CrMnMo 40CrMnMo 42-50CrMo4 38CrMoAl 20-40CrNiMo SCM415440 SNCM431 AISI4130 AISI4140 AISI4340 AISI8630 LF6 F22 Fll | Φ380～1200 | GB/T 3077
JIS G4053
API 6A 技术协议 Technical protocol |
风力发电机、油服设备等大型机械的回转支承、阀体、套管以及大型机械的轴等。 Used for making slewing bearings, valve bodies, casing pipes and shafts of large machinery such as wind driven generators, oilfield service equipment, etc. |
| 4 | 管坯钢 Tube billet steel |
20 30CrMo 4130X 4142 4145 4147 15CrMoG 12CrlMoVG 12Cr2MoG 15NilMnMoNbCu 10Cr9MolVNbN 10Cr9MoW2VNbBN SA106B/C Pll P22、WB36 P5 P9 P91 P92 X52 X65QS X52N X70Q X80Q | Φ380~1200 | YB/T4149
GB/T 33145
GB/T 5310
ASTM A335/A335M
API 5L 技术协议 Technical protocol |
用于制作高压气瓶、石油开采、火力发电、天然气传输等领域的钢管。 Used for making steel pipes for high pressure gas cylinders, oil exploitation, thermal power generation, natural gas transmission and other fields. |
| 5 | 模具钢 Die steel |
Hll H13 H13M ReH13 8418 32Cr3MolV | Φ380～800 | 技术协议 Technical protocol |
用于制作各类冷作模具、热作模具、塑料模具等。 Used for making various cold working dies, hot working dies, plastic molds, etc. |
| 6 | 齿轮钢 Gear steel |
20CrMnMoH 16MnCr5 18CrNiMo7-6 17CrNiMo6 SAE8620 | Φ380～800 | GB/T 5216
EN 10084
ASTM A304 技术协议 Technical protocol |
用于制作风电、矿山、船舶等重型机械的齿轮。 Used for making gear wheels of heavy machinery such as wind power, mining, shipbuilding and other fields. |
| 7 | 轴承钢 Bearing steel |
GCr15 GCr15SiMn | Φ380～500 | 技术协议 Technical protocol |
用于锻圆、电渣重熔。 For forging round and electroslag remelting. |
| 8 | 铁路车轮钢、 轮箍钢 Railway wheel steel Ti re steel |
CL50 CL55 CL60 CL65 CL70 ER7 ER8 ER9 AAR-A AAR-B AAR-C LG61 RT60 B6T等 |
Φ380～600 | GB/T 8601
TB/T 2817
TB/T 2708
TB/T 1882
EN 13262
AAR M-107 技术协议 Technical protocol |
用于制作铁路货车、客车、地铁、轻轨等轨道交通车辆的车轮和轮毂。 Used for making bearing rollers, rings, etc. |
