首頁 >> 新聞中心 >> GB/T 13788-2017冷軋帶肋鋼筋應力松弛試驗機Cold rolled ribbed steel wires and bars Relaxation Tester
GB/T13788-2017冷軋帶肋鋼筋應力松弛試驗機，依據GB/T21839-2019，加荷速度200MPa/min±50MPa/min，初始負荷在3min～5min加荷完畢，持荷2min後開始記錄冷軋帶肋鋼筋松弛值。試樣長度不小于冷軋帶肋鋼筋公稱直徑的60倍。應力松弛初始應力爲公稱抗拉強度70％，允許用至少120h測試數據推算1000h松弛率值。
4mm～12mm冷軋帶肋鋼筋應力松弛試驗機，試驗周期120h至1000h可設，測定技術鋼筋松弛率，繪制鋼筋松弛特性曲線(剩余試驗力-溫度、力-松弛率、力-位移變形)。hrjtest；滿足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應力松弛試驗時間≥120h、數據推算1000h。AS NZS 4672.2應力松弛試驗周期≥160h，數據推算。ASTM E328-2013，ASTM A416/A416M-2012a應力松弛試驗周期≥1000小時。BS 5896-2012應力松弛試驗周期≥1000h。JIS G3536應力松弛試驗周期≥1000h。hrjtest；JIS Z2276-2012應力松弛試驗周期≥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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濟南恒瑞金試驗機有限公司；金屬材料拉伸應力松弛試驗機；山東省力值硬度計量委員
（試驗機服務中心）（試驗機配件供應中心）（特殊夾具定制中心）
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