国标双壁波纹管_PB管-ppr管-pvc穿线管-波纹管-山东QY千亿国际塑管有限公司

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山东QY千亿国际塑管有限公司

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国标双壁波纹管

作者：stangang 来源：未知时间：2020-03-30 17:30

国标双壁波纹管执行标准，GB/T19472.1-2004 环刚度，环柔度，口径，外观尺寸，冲击，随机抽检包合格！