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1、普通圆柱螺旋拉伸弹簧（GB/T1239-2）(园钩环压中心型)：标记示例：d=0.8 D2=7 H0=34的拉伸弹簧拉簧： A型：0.8734 B型：B0.87341.材料： 碳素弹簧钢丝组或a组2.热处理: 氧化材料直径 d弹簧中径D2初拉力P0弹簧内径D1工作极限负荷Pj工作极限负荷下每圈变形量fj材料直径d弹簧中径D2初拉力P0弹簧内径D1工作极限负荷Pj工作极限负荷下每圈变形量fj0.53.50.12031.020.701.2100.4898.84.502.1750.05894.50.7551.50120.33910.83.853.200.840.6033.23.300.52140.2
2、4912.83.374.4550.3874.22.790.851.6101.548.49.591.4670.1976.22.121.77121.0710.48.282.180.890.1198.21.703.031.6140.78712.47.293.05150.94244.910.61160.60314.46.504.0670.48163.791.302122.621015.01.6290.29183.082.24141.921213.32.28120.164112.404.14161.471411.93.051.270.9975.86.000.992.5163.6013.520.52.1590.6037.84.911.73182.8415.518.62.78