牌号：25与20钢的性能相似，如经适当热处理还可以大大改善其强度和韧性。钢的焊接性能与冷应变塑性均高，无回火脆性倾向。用于制造焊接设备，以及热锻、热冲压和机加工的不承受高应力的零件，机床的渗碳和***化零件，重型和中型机械中负荷不大的轴、辊子、连接器、垫圈、螺栓、螺钉、螺母等；还用作铸钢件。生产品种圆钢、方钢、六角钢、扁钢、热轧厚钢板和宽带钢、热轧和冷轧薄钢板和钢带、线材、钢丝。牌号：30当为截面尺寸不大的钢材时，淬火和回火呈索氏体***，从而获得良好的强度与韧性综合性能。用于制造热锻和热冲压的机械零件，冷拉丝杠，重型和一般机械用的轴、拉杆、套环，以及机械用铸件，如气缸、汽轮机机架、轧钢机机架和零部件、机床机架、飞轮等；化工机械用的应力不大，工作温度不高于150℃的零件。生产品种圆钢、方钢、六角钢、扁钢、热轧厚钢板和宽带钢、热轧和冷轧薄钢板和钢带、线材、钢丝。低合金铸钢:GS-16MN51.1131GS-20MN51.1120GS-8MN71.5015GS-8MNMO741.5430GS-13MNNI641.6221GS-24Mn61.1118GS-24Mn41.1136GS-215Mn51.1138GS-Ck161.1142GS-CK241.1156GS-CK251.1155GS-CK451.1191GS-46Mn41.1159GS-30Mn51.1165GS36Mn51.1167GS-40Mn51.1168GS-40CrMnMoV71.2311GS-48CrMoV6-71.2323GS-80CrVw431.2590GS-55NiCrMoV61.2713GS-20MoNi33-131.2778GS-34CoCrMoV19-121.2887GS-20CoCrWMo10-91.2888GS-38MnSi41.5120GS-46MnSi41.5121GS-37MnSi51.5122GS-20mOv8-41.5406GS-20MnMo531.5418GS-12MnMo741.5431GS-20MnNb51.5475GS-20MnNiTi531.5485GS-10Ni61.5621GS-24Ni81.5633GS-10Ni141.5638GS10Ni141.5681GS-15CrNi61.5919GS-22MnNi51.6219GS-20MnMoNi551.6309GS-36CrNiMo41.6511GS-25CrNiMo41.6515GS-24CrNiMo3-251.6552GS-30NiCrMo851.6570GS-34CrNiMo61.6582GS-33NiCrMo7441.6740GS-38NiCrMo8441.6741GS-40NiCrMo6561.6748GS-20NiMoCr371.6750GS-18NiMoCr361.6759GS-18NiMoCr361.6759GS-22NiMoCr561.6760GS-14NiCrMo1061.6779GS-18NiCrMo1261.6781GS-19NiCrMo1261.6783GS-12MnCrNiMo531.6916GS-16MnCr51.7131GS-20MnCr51.7147GS-25CrMo41.7218GS-26CrMo41.7219GS-34CrMo41.7220GS-42CrMo41.7225GS-20CrMo41.7228GS-34CrMo441.7341GS-22CrMo541.7354GS-17CrMnMo551.7355GS-12CrMo1951.7363GS-17CrMo9101.7377GS-12CrMo9101.7380GS-19CrMo9101.7382GS-30CrMoV641.7725GS-35CrMoV1041.7755GS-36CrMoV1041.7756GS-18MnCrMo631.7903GS-19MnCrMo631.7906GS-20MnCrMo631.7909GS-50CrV41.8159我厂一贯秉承"******，顾客至上"的宗旨，热情为你提供优质服务，热诚地欢迎您的光临)