网架螺栓标准

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1、1产品型号、规格、性能等级和选用材料型号  GB/T16939-1997螺纹规格dM12~M24M27~M36M39~M64性能等级10.9S10.9S9.8S选用材料20MnTiB35VB40Cr 2机械性能材料试件机械性能性能等级抗拉力强度σbMPa屈服度σ0.2MPa伸长率δ5%收缩率ψ%min10.9S1040~124094010429.8S900~1100720硬度性能等级适用规格硬度类型洛氏硬度HRCminmax9.8S ≥M52常规3237芯部≥28实物拉力载荷螺纹规格dM12M14M16M20M

2、22M24M27应力截面积mm284.3115157245303353459拉力载荷KN88~105120~143163~195255~304315~376367~438477~569螺纹规格dM30M33M36M39M42M45M48应力截面积mm2561694817976112013101470拉力载荷KN583~696722~861850~1013878~10741008~12321179~14411323~1617 3GB/T16939-1997网架螺栓型式尺寸 螺纹规格dM12M14M16M20M22

3、M24M27M30M33M36M39M42M45M48M52M56M60M64 螺距P1.75222.52.5333.53.5444.54.555444 bmax18.52124303236394447525559646872747882min151720252730333740444750555862667074 dkmax1821243034364146505560657075809095100min17.3820.3823.3829.3833.3835.3840.3845.3849.3854.2659.2

4、664.2669.2674.2679.2689.1394.1399.13ds max12.3514.3516.3520.4222.4224.4227.4230.4233.5036.5039.5042.5045.5048.5052.6056.6060.6064.60min11.6513.6515.6519.5821.5823.5826.5829.5832.5035.5038.5041.5044.5047.5051.4055.4059.4063.40 Kmax7.158.2510.7513.414.915.917.

5、919.7522.0523.5526.0527.0529.0531.0534.2536.2539.2541.25min5.656.759.2511.613.114.116.117.6519.9521.4523.9524.9526.9528.9531.7533.7536.7538.75rmin  0.8  1.0   1.5    2.0  2.5damax15.2017.2919.2024.4026.4028.4032.4035.4038.4042.4045.4048.6052.6056.6062.6067.0

6、071.0075.00  L公称5054627375829098101125128136145148162172196205max50.8054.9562.9573.9575.9583.191.199.1102.1126.25129.25137.25146.25149.25163.25173.25197.25206.45min49.2053.0561.0572.0574.0580.988.996.999.9123.75126.75134.75143.75146.75160.75170.75194.55203.5

7、5L1 1822  24  28  43  48 5358 L2 1013 161820 24 26  303842 57 L3                 4 n  3  5  6        8t12.5345t222.534