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耐磨喷砂胶管 |
产品特点: 内胶层:采用聚氨酯和丁基橡胶为主要原材料,并加入特殊补强剂。成品内胶颜色为黄色透明状态,具有高耐磨、高韧性、耐高压等特点,耐磨指标是普通喷砂胶管的2-3倍。 增强层:夹布喷砂胶管采用优质擦胶布作增强层,柔性好、承压能力强; 钢编喷砂胶管采用镀铜胶管专用钢丝编织,承受工作压力是夹布胶管的3-4倍,具有耐压程度高,抗屈挠性能优越之特点。 使用范围: 产品主要用于各类隧道工程,井巷、洞室、护坡喷锚,在水电,矿业、军防等领域拥有广泛的应用领域。 1.胶管的规定尺寸和偏差符合下表规定。 内径(mm) | 胶层厚度(mm) | 长度(m) | 公称尺寸 | 偏差 | 内胶层 | 外胶层 | 公称尺寸 | 偏差 | 25 | 0.5 | 5.5 | 0.8 | 20 | 0.2 | 32 | 38 | 0.75 | 51 | 64 |
2.技术要求 ◆使用温度―20~+45 ℃ ◆最大工作压力0.63MPa: ◆试验压力是工作压力的2倍 ◆爆破压力不低于最大工作压力的4倍 ◆物理机械性能符合下表的规定. 试验项目 | 内胶层 | 外胶层 | 拉伸强度Mpa 不小于 | 9.8 | 5.8 | 扯断伸长率% 不小于 | 350 | 320 | 热空气老化 70℃/72h | 拉伸强度变化率% | ±25 | 扯断伸长率变化率% | +10 、―30 | 磨耗量cm3 | 0.3 | 各层间粘附强度KN/M | 2.0 |
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