首頁 >> 新聞中心 >> 300kN管道聚乙烯防腐層2.5°抗彎曲Polyethylene coating Bending Test
GB/T23257-2017埋地鋼質管道聚乙烯防腐層抗彎曲試驗，從試驗管段或實際防腐管上截取200x25mm試件，其中200mm爲沿管子軸向切割長度。2.5°彎曲模具包括凸模和凹模，凸模曲率半徑R=22.43t。
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濟南恒瑞金試驗機有限公司；山東省計量測試學會力值硬度專業委員
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