首页 >> 新闻中心 >> GB/T 13788-2017冷轧带肋钢筋应力松弛试验机Cold rolled ribbed steel wires and bars Relaxation Tester
GB/T13788-2017冷轧带肋钢筋应力松弛试验机，依据GB/T21839-2019，加荷速度200MPa/min±50MPa/min，初始负荷在3min～5min加荷完毕，持荷2min后开始记录冷轧带肋钢筋松弛值。试样长度不小于冷轧带肋钢筋公称直径的60倍。应力松弛初始应力为公称抗拉强度70％，允许用至少120h测试数据推算1000h松弛率值。
4mm～12mm冷轧带肋钢筋应力松弛试验机，试验周期120h至1000h可设，测定技术钢筋松弛率，绘制钢筋松弛特性曲线(剩余试验力-温度、力-松弛率、力-位移变形)。hrjtest；满足AS NZS 4672.2，ASTM E328-2013，ASTM A416M-2012a，BS 5896-2012，JIS G3536，JIS Z2276-2012，ISO 15630-3，GB/T5224-2014，GB/T10120-2013。
GB/T5224-2014应力松弛试验时间≥120h、数据推算1000h。AS NZS 4672.2应力松弛试验周期≥160h，数据推算。ASTM E328-2013，ASTM A416/A416M-2012a应力松弛试验周期≥1000小时。BS 5896-2012应力松弛试验周期≥1000h。JIS G3536应力松弛试验周期≥1000h。hrjtest；JIS Z2276-2012应力松弛试验周期≥1000h。
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GB/T21839-2019；GB/T5223.3-2017；GB/T5223-2014；GB/T28900-2012；GB/T20065-2016；GB/T36915-2019；ISO 14655；ISO 6892-1；ISO 7348；ISO 23718；ISO 6934-2；ISO 6934-3；ISO 6934-4；ISO 6935-1；ISO 6935-2；ASTM E8M-04；ASTM E9-89a；ASTM A 368-95a；ASTM A882/A882M；BS EN 10002-1；EN 10391；JIS G3137；GB/T1499.1-2017；GB/T1499.2-2018；GB/T30828-2014；GB/T3428-2012；GB/T31314-2014；GB/T31304-2014；GB/T30826-2014；GB/T33026-2017；GB/T25823-2010；GB/T33363-2016；GB/T7314-2017E；GB/T20492-2019；GB/T16825.1；jnshiyanji；GB/T25821-2010；JT/T1268-2019；JT/T876-2019；JT/T1063-2016；JT/T1090-2016；JT/T1105-2016；YB/T124-2017；YB/T183-2017；jnshiyanji；YB/T4165-2018；YB/T4574-2016；YB/T4581-2017；YB/T4428-2014；YB/T4451-2015；YB/T4542-2016；YD/T3322-2018；YB/T098-2012；YB/T5004-2012；
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济南恒瑞金试验机有限公司；金属材料拉伸应力松弛试验机；山东省力值硬度计量委员
（试验机服务中心）（试验机配件供应中心）（特殊夹具定制中心）
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